Delta-T GP1 Logger Quick Start Guide

GP1 Data Logger
Compact Research-Grade Logger with Differential Voltage
Channels, Versatile Relay Channel, Temperature and Counter
Channels and WET sensor serial data channel
Quick Start Guide
Delta-T Devices Ltd
v4.0
Unpacking
The GP1 package contains:





GP1 Logger (with 9V alkaline battery fitted)
GP1 to PC serial cable
DVD with DeltaLINK-PC software and documentation
This GP1 Quick Start Guide
Screwdriver and optional security screws (to replace thumb screws)
The following accessories are available:





GP1 Mounting Kit (GP1-MP1) – stainless steel mounting plate with fittings
External power cable (GP1-RSP-M8 or GP1-RSP-D)) – to power GP1 from 12V to 24V DC
Network cabling and connectors – for networking up to 10 GP1, DL6 or GP2 loggers
Annual maintenance kit (GP1-AMK1) – contains battery, desiccant, M8 connector cover, etc
GPRS Modem System – for remote data collection from GP1, GP2 and DL6 loggers or
connection to DeltaLINK-Cloud.
 Precision Bridge Adapter (GP1-PBA-x50) - for tensiometers and bridge sensors
The following sensors are supported:








Temperature sensor – ±0.20C 10k thermistor with 5m lead (ST4-05), 10m lead (ST4-10)
SM150 Soil Moisture Sensor – four total may be fitted
SM150T, SM300 and ML3 Soil Moisture Sensor – two total may be fitted
BF3 Sunshine Sensor (BF3) or SPN1 Sunshine Pyranometer (SPN1)
Rain gauge (RG1 or RG2)
WET sensor (WET-2) - one may be fitted
Tensiometer (SWT4 & SWT5) - two may be fitted, require GP1-PBA1 adapters
Equitensiometer (EQ2 & EQ3) two may be fitted
Overview
Switched Reference
+5V (ref)
WET sensor input
Event5,6
Counter
Channels
5&6
Relay
Channel
Temp3
Thermistor
M8 Connector
RS232 and
External Power
CH1
Differential
Analogue
Voltage
Temp4
Thermistor
CH2
Differential
Analogue
Voltage
Status LED
4x Cable Glands
4x Sealing
Bungs
Reset Button
The GP1 has seven input and one output channel: two differential analogue voltage channels,
CH1 and CH2; two temperature/resistance channels, Temp3 and Temp4; event counter
channels, Event 5(fast) and Event 6(slow), a serial input channel for one WET sensor and a
relay output channel Relay.
2016 Delta-T Devices Ltd
Page 2
Sensor Wiring
SM150T, SM150, SM300 and ML3 soil moisture probes:
Connect to channels CH1+Temp3 or CH2+Temp4 as follows:
CH1/2 (+)
Blue
Signal HI
CH1/2 (--)
Black
Signal LO
Brown
Power 0V or Temp(GND)
CH1/2 (GND)
Green
Screen
CH1/2 (PWR)
White
Power V+
Temp3/4 (IN)
Grey
Temperature +
Note: Ensure any pre-fitted wire link is removed between (-) & (GND)
Two more SM150T, SM150, SM300 or ML3 sensors can be added, to Temp3 and/or
Temp4 channels to measure soil moisture - if temperature readings are not required1:
Temp3/4 (IN)
Blue
Signal HI
Temp3/4 (GND)
Black
Signal LO
Brown
Power 0V
Green
Screen
White
Power V+
CH1/2 (GND)
CH1/2 (PWR)
Other voltage Sensors:
Connect to channels CH1 or CH2 as follows:
CH1/2 (+)
+ve sensor output
CH1/2 (--)
-ve sensor output
CH1/2 (GND)
Braid or screen, if required
Switched power to sensor -ve, if required
Link to CH1/2 (--) if the sensor output is single-ended
CH1/2 (PWR)
Switched power to sensor +ve, if required
10K, 2K Thermistor Temperature probes (e.g ST1)
and Resistance sensors
Connect to (IN) and (GND) terminals of channel Temp3 or Temp4.
Connect any braid or screen to the (GND) terminal if required.
Note: connection polarity is not important when using thermistors or rain gauges.
BF5 Sunshine sensor and SPN1 Sunshine Pyranometer
See BF5 and SPN1 User Manuals, Quick Starts and DeltaLINK programs.
WET sensor
See WET GP1 Logging Quick Start installed on your PC under DeltaLINK, Help, Document
Library, GP1 and DL6 or download it from www.delta-t.co.uk.
1 Note: single -ended connection in temperature channels
2016 Delta-T Devices Ltd
Page 3
Fast event channel (Event5)
Use Event5 to monitor fast switch closures or pulses - up to
32 kHz, such as a flow meter.
A flow meter is shown connected to Event5 and GND.
Slow event channel (Event6)
Use Event6 to monitor slower switch closure or pulses (<50Hz)
such as a rain gauge.
A rain gauge is shown connected to Event6 and GND.
Note: To conserve battery life use Event5 for high
speed event monitoring, and Event6 for slow events.
Relay channel
The Relay channel is an open/close switch (default
condition open). The channel is protected with a
resetting poly-fuse and can switch up to 1A.
Status LED
Two flashes per ten seconds means the GP1 is logging.
Four flashes in a group indicates an error.
Reset Switch
In the unlikely event of the logger locking up, briefly press
the Reset button.
After pressing Reset, 4 LED flashes indicate that the GP1 is doing Reset
a warm reset. Program and data are preserved and logging will
resume.
Hold Reset for more than 5 seconds to initiate a cold reset.
The status LED will flash four more times.
Cold reset restores the factory-set default program and deletes all data.
Status
LED
Analogue Channel Considerations
The differential analogue channels accept signals nominally 0 to 2.5V, with a full
signal range of -0.2 to +2.7V. Both analogue channels have a (PWR) connection
to allow the switched powering of sensors. Sensors can be powered with an
adjustable warm-up time prior to taking sensor readings. Power up times in
multiples of 1 second are permitted. The (PWR) connections supply sensors
with a switched unregulated battery voltage. Sensors requiring a regulated
supply may be powered from the switched +5V (ref) terminal.
Ensure each voltage input on the (+) or (-) terminals is kept within the permitted
input voltage limits (-2.8V to +3.6V relative to logger GND). If powered sensors
are not powered by the GP1, ensure these limits are not exceeded. The input
signal may need to be referenced to the logger ground. If the signal is floating
then fit a 10k resistor between the (-) and (GND) terminals.
2016 Delta-T Devices Ltd
Page 4
Install DeltaLINK-PC
To operate the DeltaLINK software for the GP1 logger you need:
 A PC running Windows 10, 7, XP or Vista
 Microsoft Excel 97 or later for the Excel Dataset Import Wizard
 One free RS232 serial port, or USB-RS232 adapter
 Delta-T Software and Manuals DVD (supplied with GP1)
plus DVD reader for software installation (or download at www.delt-t.co.uk
 50MB of available hard disk space
 GP1 to PC RS232 cable (supplied with GP1)
 Acrobat Reader for reading documentation (free download from www.adobe.com)
1. Insert the Software and Manuals disk into your CD ROM.
2. Select the Install DeltaLINK 3.6 (or later) link in the Contents page of the
Software and Manuals DVD and follow the on-screen instructions.
3. Setup creates a desktop shortcut to DeltaLINK-PC, and puts a Firmware
Upgrade program, a GPRS Config Utility and a Document Library folder in
the DeltaLINK-PC program group.
4. Check the Release Notes.pdf in the Document Library for latest information.
Start DeltaLINK-PC
1. Connect the GP1 to the PC’s serial port (preferably COM1) using the supplied GP1
to PC serial cable2.
2. Double click on the DeltaLINK icon on the desktop.
3. DeltaLINK attempts to connect to a logger.
If successful, DeltaLINK shows
information about it in the
Logger window.
4. DeltaLINK attempts to use
COM1 when first installed.
5. If the connection fails because
the GP1 is connected to a
different serial port, select File,
Properties. Click Add... to
connect to the correct port.
Online Help
Click Help from any DeltaLINK
window (or press F1) for detailed
information about DeltaLINK operation and functionality.
Select Start, Programs, DeltaLINK-PC, Document Library to open a folder of
application notes and technical documents.
DeltaLINK Cloud
To use our free Cloud service see http://www.delta-t.co.uk/deltalink-cloud/
2
Note: you can also communicate with the GP1 using a modem, see GPRS Quick Start Guide.
2016 Delta-T Devices Ltd
Page 5
Program the GP1
1. Select the Program window. For a new logger, this will show the GP1's factory-set
'Default' program. Click Change to enter your own program settings and name.
2. Right-click the Input Channels
list to select a sensor type from
a popup menu, or select Edit,
Channel and from the popup
menu customize a sensor's
properties.
3. Click the Advanced Features
options to add or remove
Alarm, Control and Dual Rate
pages, and enter details in
these pages, as required.
4. Click Apply to install a modified
logging program into the logger.
Pre-configured
Programs
Several pre-configured programs are provided. To use these select Edit, New
Program, and select one of the pre-configured GP1 program types.
See the online Help for additional details:
- GP1 Irrigation Monitor and Switch – for simple irrigation monitoring and control
- SPN1 and BF3 Sunshine Recorder – for recording integrated solar radiation
- WS-GP1 weather station program - available only on loggers preconfigured at
Delta-T as part of a WS-GP1 weather station
Click Apply to install the modified logging program into the GP1 logger.
Check Sensor Operation and Start Logging
1. Select the Sensors window
and click the Read now
button. The sensor readings
will continually refresh on a
scrolling time graph.
2. Observe the sensor reading
display in the scrolling charts
and value panels while
adjusting sensor wiring and/or
installation conditions.
3. Click the Cancel button when
finished.
4. Once sensors are setup select
the Logger window and click
Start to commence logging.
2016 Delta-T Devices Ltd
Page 6
Retrieve, View and Save Logged Data
1. Select the Dataset window. All
stored data in the logger will be
retrieved and displayed on the
screen (it may take a few
seconds to upload the data).
Click Refresh if required.
2. Select File, Save to save the
data to a dataset file.
3. Select File, Open to open and
view a dataset file which you
have previously saved.
4. To save a dataset file as a
ASCII file for importing into
other programs, open the file in
DeltaLINK, and select File,
Save As… selecting the
appropriate file type to save.
Dataset Import Wizard
Dataset Import Wizard helps you seamlessly import data into MS Excel spreadsheets.
Multiple dataset files may be imported and the data interleaved.
To Install Dataset Import Wizard:
1. Select
, All apps, Dataset
Import Wizard, Install Dataset
Import Wizard.
2. If prompted by Excel, select
Enable Macros. Note: Excel’s
security settings must allow
macros to run: refer to Excel
Help.
3. Dataset Import Wizard will report
that it has installed successfully,
and will add the Import Dataset(s)
to the File menu.
4. To Start Dataset Import Wizard:
Start Excel, select Add-ins, Import Dataset(s) from the menu, and follow the onscreen instructions.
Note: Prior to Excel 2007, Excel permitted 65,000 rows of data. The GP1 memory
can exceed this. If so, either update Excel, or import the data into multiple worksheets.
Custom Sensor Support
DeltaLINK supports the use of custom sensor linearisation tables for using custom
sensor types. Refer to the Document Library folder for detailed instructions.
2016 Delta-T Devices Ltd
Page 7
GP1 Specifications
Differential
Voltage
Channels
Tem perature
Channels
Typical at +20°C
Max -20°C to +60°C
Note
Voltage Accuracy
±(0.3mV+0.01% reading)
±(1.6mV+0.05% reading)
over full -0.2V to +2.7V voltage range
Soil Moisture Accuracy
±0.06%θ (±0.0006 m3/m3)
±0.3%θ (±0.003 m3/m3)
for ML3, SM150 or SM300 (0 - 60%θ) [1]
Resolution / Input Noise
±0.1mV
Input Voltage Range
-0.2 to + 2.7V
Input Voltage Limits
-2.8V to +3.6V [2]
Temperature Accuracy
Resistance Accuracy
Event
Counters
Data
recording
Physical
using 10k thermistor (-20 to 60°C) [1]
±0.2% of 2 to 100kΩ reading
±0.5% of 2 to 20kΩ reading
(±0.3% max.)
<50Hz, contact closure or pulse/logic inputs
logic low input <1V, logic high input >1.9V
High speed counter (Event5)
<33kHz, pulse/logic. <100Hz, contact closure
maximum of ±14V on Event5&6 terminal
1 year typical (alkaline)
Sw itched Sensor Pow er
1 x Relay
9V PP3 battery [3]
11 to 24V DC
External Pow er
+5V Reference
Relay Channel
each input signal relative to logger GND
±0.1°C (w ith GP1 below
30°C if reading -20 to 0°C)
Event counter (Event6)
Internal Battery Life
Pow er
±0.07°C
effective resolution of readings (typical)
pow er via external M8 connector
up to 120mA; >10V if external pow er >13.8V
5V ±0.6%
5V ±1.6%
SPST, <30V DC or <24V AC, 1A resettable fuse
sw itched battery or external pow er
sw itched voltage reference, up to 50mA
separate ON/OFF conditions
adjustable ON duty cycle
Logging frequency
1 s to 24 hr
Sensor w arm-up
multiples of 1 second
user configurable sensor w arm-up times
Internal Flash Memory
>600k readings, typical
non-volatile flash memory
user configurable logging frequency
Communications
RS232 (115kbaud)
comms via external M8 connector
Environmental
w ater resistant to IP67
4 cable glands, connector & case
Size and w eight
140 x 105 x 45mm, 280g
including battery
Temperature
-20 to +60°C
[1] GP1 accuracy only, NOT including sensor errors
[2] Common Mode Rejection (CMRR) >66dB (78dB typical)
[3] 2x ML2 ThetaProbes with 1 second warm-up, 2x 10k thermistors, and rain gauge, logging once per hour continuous
Product Care and Maintenance
The battery can be changed quickly without losing program settings or data, but no additional
data will be logged while the battery is removed. Change the battery if the voltage indicated on
the Logger window of DeltaLINK is under 5.5V or below the supply voltage needed for sensors.
Use of rechargeable or zinc-chloride batteries is not recommended.
Two 1g bags of desiccant under the PCB protect the logger from condensation. Replace with
fresh desiccant GP1 annually to ensure continued logger accuracy and reliability. Keep the cover
on and cable glands sealed except when connecting sensors or changing the battery.
Annual maintenance kit (GP1-AMK1) contains desiccant, a replacement battery, spare M8
connector cover cap & lanyard, and spare sealing bungs.
Legal Notices
Please read Product Usage.pdf in the Document Library folder.
The GP1 product is CE compliant, conforming to EN61326 (1997). This device complies with part
15 of the FCC rules. Operation is subject to the following conditions: (1) this device may not
cause harmful interference, (2) this device must accept any interference received, including
interference that may cause undesirable operation.
Delta-T Devices Ltd
130 Low Road, Burwell
Cambridge CB25 0EJ
UK
Tel:
+44 1638 742922
Fax: +44 1638 743155
e-mail: [email protected]
[email protected]
web: www.delta-t.co.uk
">