1. OPERATING CONTROLS. Ahlborn ALMEMO 2790, MA2790BTFV

1. Operating controls

1. OPERATING CONTROLS

(1) Measuring inputs

M0 Suitable for all ALMEMO ® sensors (except D7 sensors)

(2) M1 Humidity sensor

(option RHA)

(3) DC connector

5 to 12 V and USB (ZA 19019-DKU5)

(4) LCD

(a) Function

(b) Measuring point, 2nd measured value Function information

(c) Units for 2nd measured value

(d) Units for 1st measured value

Abbreviation for function

(e) 1. Measured value

(f) Operating states:

START Meas. operation started

LOBAT Battery voltage <3.3 V

CONNECT Wireless link established

FCT Programming function

(5) Operating keys

ON OFF To switch device ON press once and release lTo switch device OFF press and hold down

▲ , ▼ Meas. point selection

F1

F2

PROG

To start / stop measuring

Programming function

Program

▲ , ▼ , ► To enter data

START LOBAT CONNECT FCT

Rear of device:

(6) Battery compartment

3 rechargeable Ni-MH batteries

(7) Charge indicator

Bluetooth sensor module ZA1729BTFS

Plug in at an ALMEMO ® sensor socket Mxx on any ALMEMO ® device

2 ALMEMO ® 2790

Table of contents

2. TABLE OF CONTENTS

1. OPERATING CONTROLS..........................................................................2

3. GENERAL...................................................................................................5

3.1 Warranty..............................................................................................5

3.2 Standard delivery...............................................................................6

3.3 Waste disposal...................................................................................6

4. SAFETY INSTRUCTIONS..........................................................................7

4.1 Special notes on use..........................................................................8

4.2 Handling batteries / rechargeable batteries correctly.....................8

5. INTRODUCTION.........................................................................................9

5.1 Functions............................................................................................9

5.1.1 Sensor programming.................................................................10

5.1.2 Process control..........................................................................10

6. PUTTING INTO SERVICE.........................................................................11

7. POWER SUPPLY......................................................................................11

7.1 Operation using rechargeable batteries / batteries.......................11

7.1.1 Operation using rechargeable batteries.....................................11

7.1.2 Operation using standard batteries............................................12

7.1.3 Supply voltage monitoring.........................................................12

7.2 Mains operation................................................................................12

7.3 External DC voltage supply.............................................................13

7.4 Sensor supply...................................................................................13

7.5 Switching ON / OFF, reinitialization................................................13

7.6 Data buffering...................................................................................13

8. PAIRING...................................................................................................13

9. CONNECTING SENSORS........................................................................14

9.1 Sensors.............................................................................................14

9.2 Measuring inputs und additional channels....................................14

9.3 Potential separation.........................................................................15

10. DISPLAY AND KEYPAD...........................................................................16

10.1 Display.............................................................................................16

10.2 Keypad............................................................................................17

11. MEASURING OPERATIONS....................................................................18

11.1 Measured value...............................................................................18

11.1.1 Selecting a measuring point.....................................................18

11.1.2 Measuring quantities and ranges.............................................20

11.1.3 Dual display.............................................................................22

11.2 Peak values memory......................................................................22

12. INTERFACE..............................................................................................22

13. DEVICE CONFIGURATION......................................................................22

13.1 Cycle................................................................................................23

ALMEMO ® 2790 3

2. Table of contents

13.2 Device locking................................................................................24

13.3 Atmospheric pressure compensation..........................................24

14. WIRELESS TRANSMISSION TO DATA LOGGER...................................25

15. TROUBLE-SHOOTING.............................................................................25

16. ANNEX......................................................................................................27

16.1 Technical data.................................................................................27

16.2 Product overview...........................................................................28

16.3 Index................................................................................................29

16.4 Your contact partners....................................................................32

4 ALMEMO ® 2790