Ahlborn Ami Pro - 23901E.SAM

Operating instructions

Universal measuring instrument

ALMEMO

®

2390-1

V1.1

07.01.2004

ALMEMO



2390-1 1

Table of contents

Operating instruction

Universal Measuring Instrument

ALMEMO

®

2390-1

With supplementary reference to the ALMEMO

®

-Manual

Table of contents

1. INTRODUCTION

1.1 Functions

1.2 Operating controls

2. PUTTING INTO SERVICE

3.

3.1

3.2

3.3

POWER SUPPLY

Battery / rechargeable battery operation

External voltage supply

Switching ON and OFF

4. CONNECTING THE SENSORS

4.1 Sensors

4.2 Measuring inputs and additional channels

5. DISPLAY

8.

9.

6.

6.1

SENSOR PROGRAMMING

Measuring range

6.2 Dimensions

7.

7.1

MEASURING OPERATIONS

Measured values and selection of measuring point

TROUBLE-SHOOTING 15

ELECTROMAGNETIC COMPATIBILITY 16

12

12

14

14

14

9

9

10

11

7

7

9

9

Page

3

4

6

7

APPENDICES 17

Technical data 17

Product overview 17

2 ALMEMO



2390-1

Introduction

1. INTRODUCTION

The universal measuring instrument ALMEMO

®

2390-1 is member of a truly unique product family

- all equipped with the ALMEMO

®

connector system, patented by Ahlborn

Mess- und Regelungstechnik GmbH. The intelligent ALMEMO

®

connector offers decisive advantages when connecting sensors and peripherals because all parameters are stored in an EEPROM on the connector itself; repeat programming is thus no longer necessary.

All sensors and output modules can be connected to all ALMEMO

®

measuring devices - all in the same way. Programming and functioning are identical for all units. The following points apply to all devices in the ALMEMO

®

measuring system; they are described in detail in the ALMEMO

®

Manual supplied with each device

:

Detailed description of the ALMEMO

®

system (Manual, Section 1)

Overview of the device functions and measuring ranges (Manual, Section 2)

Basic principles, operating instructions, technical data for all sensors

(Manual, Section 3)

Options for connecting your own existing sensors (Manual, Section 4)

All analog and digital output modules (Manual, Section 5.1)

Universal measuring instrument ALMEMO

®

2390-1, unlike the other family members, does not incorporate an interface; i.e. those sections of the Manual listed below concerning connection to and use of the interface do not apply. However, the sensor functions themselves, providing the sensor connectors have been suitably programmed, do apply.

Interface modules RS232, optic fiber, Centronics (Manual, Section 5.2)

The entire ALMEMO

®

networking system (Manual, Section 5.3)

All functions and their operation via the interface (Manual, Section 6)

Complete list of interface commands with all the print outputs

(Manual, Section 7)

These operating instructions only cover features and controls that are specific to this device.

ALMEMO



2390-1 3

Functions

1.1 Functions

Universal measuring instrument ALMEMO

®

2390-1 is a simple measuring instrument with just one measuring input (maximum 2 channels); it does not have its own integrated programming facility. However, any programmed ALME-

MO

®

sensor can easily be connected to it and the measured values plus units can be read out on the LCD.

It is also possible, as and when required, to connect an analog output module to the output socket and evaluate measured values using e.g. a chart recorder or plotter.

SENSOR PROGRAMMING

The measuring channels are automatically and completely programmed by the

ALMEMO

®

sensor connectors. The ALMEMO

®

2390-1 cannot be used to modify the programming but it is possible to do so using one of the many other

ALMEMO

®

devices incorporating an input facility. The ALMEMO

®

2390-1 does, however, support all sensors programmed in this way without restriction.

Measuring ranges

For all sensors with a non-linear characteristic, e.g. 10 thermocouple types, Ntc and Pt100 sensors, infrared sensors, and flow sensors (rotating vanes, thermoanemometers, Pitot tubes), the appropriate measuring ranges are available.

For humidity sensors, additional function channels are available that also calculate humidity variables such as dew point, mixture ratio, vapor pressure, and enthalpy. Even complex chemical sensors are supported. Measured values from other sensors can also be acquired using the voltage, current, and resistance ranges with individual scaling in the connector. Existing sensors can also be used without difficulty - so long as the appropriate ALMEMO

®

connector is connected via its screw terminals. For digital input signals and frequencies, adapters are available with an integrated microcontroller. It is thus possible to connect virtually any sensor to any ALMEMO

®

measuring instrument and to interchange these without the need for any extra settings.

Units

There are two 16-segment displays; these always indicate the physically correct units for the ALMEMO

®

sensor in question. Conversion between °C and

°F is performed automatically.

MEASUREMENT

For each transducer up to two measuring channels are available; i.e. it is also possible to evaluate double sensors, individually scaled sensors, and sensors with function channels. The selected measuring point is scanned at a conversion rate of 2.5 measuring operations per second; the measured value is calculated and output to the display and, if available, to an analog output.

4 ALMEMO



2390-1

Functions

Measured value

The measured value for the selected measuring point is shown continuously with auto zero and, as and when necessary, with measured value correction.

With most sensors, sensor breakage is detected automatically (except for connectors with shunt, divider, or additional electronics).

Measuring functions

With some sensors, to achieve optimal data acquisition, special measuring functions are required. Cold junction compensation is available for thermocouples; temperature compensation is available for dynamic pressure, pH, and conductivity probes. With infrared sensors the parameters for zero point and slope correction are used as the background temperature and emissivity factor.

External sensor programming

All sensor programming is supported so long as the sensors have been programmed at the factory or using some other suitable ALMEMO

®

device.

Units

The 2-character units display can be changed for each measuring channel so that the display always indicates the correct units, e.g. when a transmitter is connected.

Correction of measured values

The measured value on each measuring channel can be corrected in terms both of zero point correction and slope (gain) correction; this means that even sensors usually requiring initial adjustment (expansion, force, pH) can be freely interchanged.

Scaling

The corrected measured value on each measuring channel can also be further scaled in terms of zero point and slope (gain) - using the base value and factor.

The decimal point position can be set with the exponent.

Analog output and scaling

The displayed measured value can, by means of analog start and analog end, be scaled in such a way that the associated measuring range covers the full analog output range (2 V, 10 V, or 20 mA).

ALMEMO



2390-1 5

Operating controls

1.2 Operating controls

(1)

( 2 ) ( 3 )

(4)

(5)

(6)

(1) ON/OFF

up : ON, measuring point M10 middle : ON, measuring point M00 down : OFF

(2) Measuring input M0

for all ALMEMO

®

sensors

M0 1st measuring point

M10 2nd measuring point

(3) Output socket A1

Analog output (ZA 1601-RK)

(4) Socket

Mains adapter

(ZB 2290-NA, 12 V, 200 mA)

Connecting cable

(ZB 5090-EK, 7-13 V DC)

Cable, electrically isolated

(ZB 2290-UK, 10-30 V)

(5) LCD

(6) Battery compartment

(rear of device)

9-volt alkaline-manganese battery (6F22)

Space for reserve battery

CORR a

(5) LCD display

(a) Symbols for operating states

BAT

Battery voltage <7 V

▲ CORR Correction of measured values

(b) 6x7 segment display for :

measuring point, measured value

(c) 2x16 segment display for :

units for measured value b c

6 ALMEMO



2390-1

Putting into service

2. PUTTING INTO SERVICE

1. Connect transducer to socket M0 (2); (see Section 4).

2. Provide power supply via 9-volt battery or mains adapter;

(see Section 3.1, 3.2).

3. To switch on, push the slide switch (1) located on the left side of the device one position upwards; (see Section 3.3); then read the measured value;

(see Section 7.1).

4. To select the 2nd measuring channel M10, push the slide switch (1) to its uppermost position, then read the measured value; (see Section 7.1).

3. POWER SUPPLY

As power supply for the measuring instrument there are the following possibilities :

9V Batterien IEC 6 F22

9-volt batteries IEC 6 F22

ZB 2000-B9

ZB 2000-B9

9-volt rechargeable battery pack, same

with charger integrated in the connector

mains adapter 12 V / 200 mA

external power supply, connecting cable

ZB 2000-A9, ZB 2000-LS

ZB 2290-NA

ZB 2290-UK

Our product spectrum includes all the appropriate accessories.

3.1Battery / rechargeable battery operation

Use only alkaline-manganese batteries, type IEC 6 F22. At a current consumption of around 4.5 mA, these last for an operating time of approx. 80 hours. If sensors or modules also requiring power are connected, the operating time will be accordingly shorter.

Inserting the batteries :

The battery compartment (6) is located underneath the device.

1.

Press on the spot marked with the arrow and at the same time pull in the direction shown by the arrow (as shown in the illustrations).

2.

Connect the battery using the clip. Accidental reverse polarity is prevented by the shape of the connections.

3.

Use the second battery compartment to store a reserve battery.

ALMEMO



2390-1 7

Power supply

Battery check :

If the battery symbol in the display lights up, this means that the battery will last for approximately another

5 hours. (Supply voltage <7 V)

In the event of the battery voltage falling below 6 volts, the display shows the message ‘LobAt’.

In this event the battery must be removed immediately.

This prevents the battery from leaking and thus damaging the device.

The current battery voltage can be checked by removing the sensor or by releasing the 2nd measuring channel.

Tips on the correct handling of batteries:

Never leave used dead batteries in the device !

If the device is likely to be unused for a relatively long time, remove the batteries !

A leaking battery represents a health hazard and may also destroy the device. Use only leak-proof batteries !

Spent batteries are special waste and must be disposed of in an environmentally acceptable way. Take spent batteries back to your dealer or dispose of them in your local battery collection container !.

Rechargeable battery operation:

Instead of the standard batteries you can use rechargeable battery packs.

Rechargeable batteries are of lower capacity, and provide an lower operating time. If sensors or modules also requiring power are connected, the operating time will be accordingly shorter. From our range of accessories we recommend the 9-volt rechargeable battery with a charger integrated in the connector, ZB 2000 LS.

Tips on the correct handling of rechargeable batteries:

The rechargeable batteries supplied are not usually charged when delivered.

If NiCd cells are only partly discharged, normal recharging will not restore them to full capacity.

Use the device until the batteries are nearly totally discharged.

Then recharge the batteries completely.

This will significantly prolong the life of your rechargeable batteries.

Even fully charged batteries discharge in storage without being used.

8 ALMEMO



2390-1

Connecting the sensors

3.2 External voltage supply

On the right side of the device there is a socket (4) for connecting an external power supply. In our range of accessories we offer a mains adapter ZB

2290-NA (12 V / 200 mA). Or, alternatively, you can use some other DC power source (7 to 13 V). The power source is connected by means of a low-voltage connector (NES1 as per DIN 42323), center pin to minus.

If, however, the power supply has to be electrically isolated from the transducers or if a larger input voltage range (10 to 36 V DC) is required, electrically isolated supply cable ZB 2290-UK must be used. It will then be possible to operate the measuring instrument using a 12- or 24-volt on-board supply system.

If a battery is connected, this will, in the event of a voltage drop below 9 volts, take over as power supply.

3.3 Switching ON and OFF

The slide switch (1) on the left side of the device has three switch positions : up : ON - measuring channel M10 middle : ON - measuring channel M0 down : OFF

To switch on, push the slide switch (1) located on the left side of the device upwards.

To switch off, push the slide switch down as far as it will go.

4. CONNECTING THE SENSORS

Virtually any ALMEMO

®

sensor can be connected to the ALMEMO® input sokket M0 (2). To connect your own existing sensors you simply need the appropriate ALMEMO

®

connector.

4.1 Sensors

The ALMEMO

®

Manual includes detailed descriptions of the comprehensive

ALMEMO

®

sensor range (see Manual, Section 3) and of how to connect your own existing sensors to ALMEMO

®

instruments (see Manual, Section 4). All standard sensors with an ALMEMO

®

connector usually have the measuring range and units already programmed and can thus be immediately connected to any input socket. A mechanical code system ensures that sensors and output modules can only be connected to the correct sockets. Each ALMEMO

® connector also incorporates two locking levers; these snap into position as soon as the connector is inserted into the socket, thus preventing disconnection if the cable is pulled. To withdraw the connector, both these levers must be pressed in at the sides.

ALMEMO



2390-1 9

Connecting the sensors

4.2 Measuring inputs and additional channels

Measuring instrument ALMEMO

®

2390-1 incorporates one input socket M0 (2).

Of the maximum four channels that an ALMEMO

®

sensor may have this device can use only two. Additional channels are available primarily for humidity sensors (temperature / humidity / dew point / mixture ratio) or flow probes and chemical probes incorporating a temperature sensor. A single sensor can be programmed, if necessary, with several ranges or scaling processes; similarly, if pin assignment permits, two sensors can be combined on one connector (e.g. rH/Ntc, mV/V, mA/V, etc.). If the 2nd channel is not programmed, the battery voltage is displayed. The additional measuring channel is located in the connector on the next level, number 10.

On the measuring instrument this gives the following channel assignment : channel 4

30 channel 3 20 channel 2

10 channel 1

0

M0 disabled disabled

A1

2390-1

Sensors combined within one connector are electrically interconnected and must therefore be operated in isolation. The voltage applied to the measuring inputs themselves must not exceed ±5 volts (between B, C, D, and A or - ).

The cold junction compensation for thermocouple measurement is integrated in socket M0 on the device.

10 ALMEMO



2390-1

Display

5. DISPLAY

The display (5) on measuring instrument ALMEMO

®

2390-1 comprises an LCD with six 7-segment digits, two 16-segment characters, a battery symbol, and arrows to indicate the operating status.

BAT CORR ALRM

M DIM

Special operating states and faults

Segment test for display : switched on Voltage supply : below 7 V : automatic - each time the device is

BAT - symbol lights up below 6 V:

L o b A t

  

Checksum error during device calibration

Non-connected sensors, deactivated measuring points

Non-permitted measuring range

C

0:

0:

A L

-

E r

E

r

r r

-

 

 

 

 

Sensor correction or scaling

Limit value exceeded

Sensor breakage:

Measuring range overshot :

Measuring range undershot :

Measuring range undershot for cold junction compensation or breakage:

Values range overshot (>65000):

CORR arrow lights up

ALRM arrow lights up

0: `N i C r´

°C abbreviation flashes

Maximum value flashes

Minimum value flashes

0: `C J´

°C

(Cold junction)

flashes

0:`6 5 0 0 0´

XX

flashes

ALMEMO



2390-1 11

Sensor programming

6. SENSOR PROGRAMMING

Since on ALMEMO

®

devices all sensor programming is stored in the ALME-

MO

®

connector, you can connect any ALMEMO

®

sensor without needing to reprogram. Measuring instrument ALMEMO

®

2390-1 does not have its own integrated programming facility. To connect certain sensors you must order AL-

MEMO

®

connectors that have already been appropriately programmed. If, however, you wish to scale your own sensors or if sensor errors have to be continually corrected, you can do the programming using one of the many other ALMEMO

®

devices incorporating an integrated input facility; (see Manual,

Section 6.3).

6.1 Measuring ranges

With each channel switchover or sensor breakage the abbreviation for the measuring range appears in the display. The following table lists all possible measuring ranges for identification purposes.

Sensors

Pt100-1

Pt100-2

Ni100

NiCr-Ni (K)

NiCroSil-NiSil (N)

Fe-CuNi (L)

Fe-CuNi (J)

Cu-CuNi (U)

Cu-CuNi (T)

PtRh10-Pt (S)

PtRh13-Pt (R)

PtRh30-PtRh6 (B)

Au-FeCr

Ntc type N

Millivolt

Millivolt 1

Millivolt 2

Volt

Difference millivolt

Difference millivolt 1

Sensor/connector

Meas. range

Units

Display

FP Axxx -200.00...+300.00

°C

°C

P104

P204

ZA 9030-FS3

FT Axxx

ZA 9020-FSN

ZA 9000-FSL

ZA 9000-FSJ

ZA 9000-FSU

ZA 9000-FST

FS Axxx

ZA 9000-FSR

ZA 9000-FSB

ZA 9000-FSA

FN Axxx

ZA 9000-FS0

ZA 9000-FS1

ZA 9000-FS2

ZA 9000-FS3

ZA 9050-FS0

ZA 9050-FS1

Difference millivolt 2 ZA 9050-FS2

Difference volt

Sensor voltage

Milliampere

Percent (4-20mA)

Ohms

Frequency

ZA 9050-FS3 any

ZA 9601-FS1

ZA 9601-FS2

ZA 9003-FS

ZA 9909-AK1

-60.0... +240.0

-200.0...+1370.0

-200.0...+1300.0

-200.0... +900.0

-200.0...+1000.0

-200.0... +600.0

-200.0... +400.0

0.0...+1760.0

0.0...+1760.0

+400.0...+1800.0

-270.0... +60.0

-30.00...+125.00

-10.000...+55.000

-26.000...+26.000

-260.0...+260.0

-2.0000...+2.6000

-10.000...+55.000

-26.000...+26.000

-260.0...+260.0

-2.0000...+2.6000

0.00...20.00

-26.000...+26.000

0.00... 100.00

0.0... 500.0

0... 32000 mV mV mV

V mV

°C

°C

°C

°C

°C

°C

°C

°C

°C

°C

°C

°C mA

%

Ω

Hz mV mV

V

V

Pt13

EL18

AUFE

Ntc

U 55

U 26

U260

U2.60

d 55

N104

NiCr

NiSi

FECO

IrCo

CUCO

CoCo

Pt10 d 26 d260 d2.60

UbAt

I032

P420

Ohn

FrEq

12 ALMEMO



2390-1

ALMEMO



2390-1

Sensor programming

Sensors

Digital input

Sensor/connector

ZA 9000-EK2

Meas. range Units Display

0.0... 100.0

-65000... +65000

% Inp diGi

Digitale interface ZA 9919-AKxx

Infrared 1

Infrared 4

Infrared 6

Snap-on head, normal

Snap-on head, normal 40

Snap-on head, micro 20

Snap-on head, micro 40

Macro

Water-micro

Dyn.pressure 40m/s w. TC

Dyn.pressure 90m/s w. TC

Relative air humidity, cap

Relative air humidity, w. TC FH A646-R

Humid temperature

FI A628-1/5

FI A628-4

FI A628-6

FV A915-S120

FV A915-S140

FV A915-S220

FV A915-S240

FV A915-MA1

FV A915-WM1

FD A612-M1

FD A612-M6

FH A646

FN A846

0.0... +200.0

-30.0... +100.0

°C

°C

0.0... +500.0

°C

0.30... 20.00

m/s

0.40... 40.00

m/s

0.50... 20.00

m/s

0.60... 40.00

m/s

0.10... 20.00

m/s

0.00... 5.00

m/s

0.50... 40.00

m/s

1.00... 90.00

m/s

0.0... 100.0

0.0... 100.0

%H

%H

-30.00 ... +125.00

°C

0.0 ... 100.0

%H

L420

L605

L840

L890

°orH

H rH

P Ht

P RH

Ir 1

Ir 4

Ir 6

S120

S140

S220

S240

Rel. air humidity psychr.

FN A846

Mixture ratio pschr.

Dew-point temp. pschr.

Partial vapor press. psychr

Enthalpy, psychr

FN A846

FN A846

FN A846

FN A846

Conductivity probe, with TC FY A641-LF

CO

O

2

2

-sensor

saturation, with TC

Function channels

Maximum value

Minimum value

Alarm value of

FY A600-CO2

FY A640-O2 any any any

0.0 ... 500.0

g/k

-25.0 ... +100.0

°C

0.0 ...1050.0

0.0 ... 400.0

0.0 ... 20.000

0.0 ... 2.500

0 ... 260 mb kJ mS

%

%

P AH

P dt

P UP

P En

LF

CO2

O2-S

Hi

Lo

% Alrm

Given its limited operating functions, the ALMEMO

®

2390-1 cannot be used to measure the following values

Pulses

Mixture ratio, cap

Dew-point temp. cap

ZA 9909-AK2

FH A646

FH A646

Partial vapor pressure, cap FH A646

Enthalpy, cap FH A646

O

2

concentration, with TC FY A640-O2

Average value over time any

Av. value of meas. points

Sum of measuring points

Total number of pulses

Pulses / print cycle any any

ZA 9909-AK2

ZA 9909-AK2

Wet bulb globe temp. meas. ZA 9000-FS

0... 65000

0.0 ... 500.0

g/k

-25.0... 100.0

°C

0.0 ...1050.0

0.0 ... 400.0

0 ... 40.0

mb kJ mg

0... 65000

0... 65000

°C

PULS

H AH

H dt

H UP

H En

O2-C

A[t]

A[n]

S[n]

S[t]

S[P]

UbGt

T

C = Temperature compensation

13

Measuring operations

6.2 Dimension

The units are shown after the measured value as two 16-segment characters.

Depending on the programming (see Manual, Sec. 6.3.5) units other than the standard units can be stipulated per measuring range; (see Manual, Sec. 6.1).

For degrees Fahrenheit (ºF) the temperature value is converted from degrees Celsius

With the character

C or F cold junction compensation is disabled. The units ms are displayed as m/s and mh as m 3

/ h.

7. MEASURING OPERATIONS

With measuring instrument ALMEMO

®

2390-1 both measuring channels are scanned continuously; this ensures continuous temperature compensation for dynamic pressure probes or chemical probes; (see Manual, Section 6.5.1.3).

Two measuring points can be displayed; (see Section 7.1). A measured value can be sent to an analog output; (see Manual, Section 5.1.1).

7.1 Measured values and selection of measuring point

When the device is switched on (1st position) the display first of all shows the current measured value for measuring point M0.

CORR

Measure - measuring point M0.

M DIM

If the connected sensor is programmed for more than one measuring point

(e.g. a humidity sensor), you can select the second measuring point M10 by means of the slide switch (1).

To select the 2nd measuring point by means of the slide switch:

CORR

M DIM

If, when switching measuring points, the measuring range changes, the abbreviation for the measuring range is displayed for a moment first; (see Section

6.1). This abbreviation also flashes in the event of sensor breakage - instead of the measured value:

CORR

Display of the measuring range:

M DIM

If the actual measured value changes as a result of programmed scaling or correction values (see Manual, Sec. 6.3.10/11), then the ‘CORR’ arrow lights up in the display

14 ALMEMO



2390-1

Trouble-shooting

8. TROUBLE-SHOOTING

Measuring instrument ALMEMO

®

2390-1 can have a great many different sensors and peripherals connected to it. Given these numerous possibilities the device may in certain circumstances not behave quite as expected. The cause of such unexpected behavior is only very rarely a device defect; more usually it is incorrect operation by the user, an incorrect setting, or incorrect cabling. In such event try to pinpoint and clear the problem with the aid of the following tests.

Error:

Either no display or all display segments light up continuously

Remedy: Check the power supply, switch off and then on again

Error:

Measured values are incorrect

Remedy: Check the position of the slide switch (used for switching on and selecting measuring channels). If the 'CORR' arrow lights up, this may indicate that the measured value has been falsified by correction values; in this event have the programming checked at the factory or try in conjunction with another ALMEMO

®

device.

Error:

Fluctuating measured values or segment test or the system hangs in mid-operation,

Remedy: Check the cabling for inadmissible electrical connections, disconnect the external power supply and the analog output, unplug the sensor and replace with a hand-held sensor and operate them in air or dummies (for thermocouples short-circuit A-B, for Pt100 sensors,

100-

Ω resistor); if these steps succeed in clearing the error, then check all wiring, if necessary, insulate the sensor, use an electrically isolated power supply, eliminate interference by using shielded or twisted wiring

Error:

´

CALErr´ is displayed when device is switched on

Remedy: The calibration of a measuring range may have become misadjusted; the device must be recalibrated at the factory

If, after performing the above-listed checks and remedial steps, the device still fails to behave as described in the instructions, it must be returned to our factory in Holzkirchen, accompanied by a explanatory note and error description.

Complaints not accompanied by explanation and error description cannot be processed.

ALMEMO



2390-1 15

Electromagnetic compatibility

9. ELECTROMAGNETIC COMPATIBILITY

ALMEMO

®

measuring instrument 2390-1 complies in full with the safety requirements specified in the EU directive on the approximation of Member States’ laws relating to electromagnetic compatibility (EMC) (89/336/EEC).

The following standards have been applied in evaluating the product :

IEC 61326:1997+A1:1998+A2:2000

IEC 61000-6-1:1997

IEC 61000-4-2:

1995+A1:1998+A2:2000 8kV

IEC 61000-4-3:

1995+A1:1998+A2:2000 3V/m

IEC 61000-6-3:1996

IEC 61000-4-4:

1995+A1:2000 2kV

The following advisory notes must be observed when operating the device :

1. If the standard sensor is extended (1.5 meters) care must be taken to ensure that the measuring lines are not laid together with high-voltage power cables or that they are properly shielded so as to prevent spurious interference from being induced in the system.

2. Using the device in strong electromagnetic fields may aggravate measuring errors (<50 uV at 3 V/m and 1.5 meters thermocouple sensor). After exposure to such irradiation ceases, the device will again operate within its technical specifications

16 ALMEMO



2390-1

Appendix

Technical data

(see also Manual, Section 2.2)

Measuring inputs:

one ALMEMO

®

socket for ALMEMO

®

sensors

Channels : 2 measuring or function channels, depending on sensor type-

Sensor power supply : Battery : 7 to 9 V, max. 100 mA

Mains adapter : approx. 12 V, max. 100 mA

Measuring rate :

System accuracy :

2.5 measuring operations per second

±0.05% of measured value ±3 digits

Temperature drift : 0.01% / K

Cold junction compens. : ± 0.2 K ± 0.01 K /ºC (-30 to +80 ºC)

Outputs : 1 ALMEMO

®

socket for analog output module

Equipment :

Display :

A/D converter :

Microprocessor :

6-digit 7-segment, 2-digit 16-segment, 12 mm delta-Sigma ± 16 bit

NEC 78F0078

Power supply :

Mains adapter :

7 to 13 V DC, not electrically isolated

ZB 2290-NA, 230 V AC to 12 V DC, 200 mA, electrically isolated

Adapter cable, el. isol. : ZB 2290-UK, 10 - 30 V DC. to 12 V DC, 250 mA

Current consumption : approx. 5 mA (without input and output modules)

Housing : 180 x 85 x 33 mm,

ABS (acrylonitrile butadiene styrene) high impact resistance (max. 70 °C)

Operating temperature : -10 ... +60 ºC

Storage temperature : -30 ... +60 ºC

Ambient rel. humidity : 10 to 90 % (non-condensing)

Delivery includes : Measuring instrument ALMEMO

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Operating instructions ALMEMO

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ALMEMO

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Manual

Product overview

Universal measuring instrument ALMEMO

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1 input, 2 channels, connection for analog output

Mains adapter, 12 V DC, 200 mA

DC adapter cable, 10 to 30 V DC, 12 V / 250 mA, electrically isolated

ALMEMO

®

analog output module

- 1.25 to 2.00 V, 0.1 mV / digit

Order no.

MA 2390-1

ZB 2290-NA

ZB 2290-UK

ZA 1601-RK

ALMEMO

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Appendix

Your contact partners

18 ALMEMO

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Appendix

ALMEMO

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Appendix

20 ALMEMO

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