|
|
Transmitters
The Eltek range of transmitters
GenII transmitters have been designed to work with many types of external
of sensors to meet the requirements of a wide range of applications. Inputs
for temperature, humidity, voltage/current (e.g.4-20mA) visible light,
UV, event and pulse are already catered for (See the table below). In
addition transmitters can have in-built sensors such as humidity and/or
temperature only, light and differential air pressure.
Eltek offers a built-in 4 digit LCD
for most transmitters. For transmitters with multiple inputs, the LCD
scrolls through the inputs indicating engineering units with the reading.
The 10mm high characters assure a wide viewing angle.
Transmitters are attractively styled and extremely rugged using a drawn
aluminium case. A built-in wall bracket with anti tamper features means
the unit can be discreetly mounted if needed ideal for incorporation
in an exhibit case or factory production area. Versions are also available
for outdoor use.
A brief summary of the models is listed below. If the version you require
is not listed please contact Eltek as it may already be in development,
if not we will be pleased to discuss finding a solution for you.
| Model No. |
Built-in Temperature |
| GC-05/GD-05 |
Built-in Temperature |
|
Range
-30 to +65ºC |
Resolution
0.1ºC |
Accuracy
±0.5ºC |
| GC-10/GD-10 |
Built-in Temperature
and Relative Humidity |
Range
Temperature:
-30 to +65ºC
Relative Humidity:
0-100%
|
Resolution
0.1ºC
0.1% |
Accuracy
±0.4ºC(+5 to +40ºC)
±1.0ºC(-20 to +80ºC)
±2%(10 to 90%Rh)
±4%(0 to 100%Rh) |
| GD-11 |
Built-in Temperature
and Relative Humidity
Input for Thermistor Temperature
|
Built-in temperature and humidity as GC-10.
Thermistor temperature as GC-12. |
|
Model No. (Inputs) |
External Temperature |
| GC-12 |
Basic external
Thermistor Temperature |
|
| Range:
Resolution:
Accuracy: |
-40 to +70ºC
0.1ºC (-15 to +40ºC)
0.3ºC (-36 to +70ºC) ±0.2ºC (-15 to +40ºC)
±0.6ºC (-36 to +70ºC) |
GS-21/GD-21 GS-24/GD-24
|
External Thermocouple
Temperature (K/T)
|
Type:
Range:
Resolution:
Accuracy: |
K or T
-200 to 200ºC
0.1ºC/0.2ºC
±0.3ºC
Note: thermocouple connectors are not included. |
| GD-21AL |
External Thermocouple
Temperature (K/T) with built – in audible and visual
alarm |
| |
As GS-21 |
| GD-24H
|
External Thermocouple
Temperature (K) |
Type:
Range:
Resolution:
Accuracy: |
K
-200 to 1200ºC
0.5ºC ±0.3ºC |
GS-31/GD-31
GS-32/GD-32
GS-34/GD-34
GS-38/GD-38 |
External Thermistor
Temperature |
| Range:
Resolution:
Accuracy:
|
-50 to +150ºC
0.05ºC (-5 to +75ºC)
0.1ºC (-25 to +100ºC)
0.2ºC (-40 to +125ºC) ±0.1ºC (-5 to +75ºC)
±0.2ºC (-25 to +100ºC) ±0.4ºC (-40
to +125ºC) |
GD-52
GD-52H |
External Platinum
Resistance Temperature |
Type: Range:
Resolution: Accuracy: |
Pt100 2 or 4 wire
-100 to 200ºC (GD-52), 0 to 300ºC (GD-52H)
0.1ºC ±0.3ºC |
| Model No. |
External Temperature
and Humidity |
| GS-13E/GD-13E |
Inputs for Combination
Temperature and Humidity probe |
|
Combination input for
Eltek RHT10-D temperature and humidity
probe |
GD-14E
|
Input for Combination
Temperature and Humidity probe and 2 inputs for Thermistor
Temperature |
|
|
As GS-13 (above) with additional inputs for 2 external
thermistor probes (As GC-12). |
| GD-14R |
Input for Combination
Temperature and Humidity probe and 2 inputs for Thermistor
Temperature |
| |
Combination input for Rotronic Hygroclip S probe:
External RH
Range: 0-100%, Accuracy: At 23ºC ± 1.5%rh
Temperature
Range: -40 to +85ºC, Accuracy: At 23ºC ± 0,3K
Plus additional inputs for 2 external thermistor probes (As GC-12).
|
Model No. (Inputs) |
Voltage and Current |
GS-42
GS-44 |
Inputs for
Voltage or Current |
|
|
Range
0-1V DC
0-10V DC
0-20mA DC
4-20mA DC |
Accuracy ±0.5mV
±5mV
20uA
0.1% |
Resolution
0.25mV
2.5mV
5uA
0.05% |
| Model No. |
Light |
| GL-70 |
Built in
Ultraviolet and Visible
Light with Temperature and Humidity |
 |
|
Temperature
and humidity as GC-10 |
| Visible Light |
Ultra Violet light |
| Range:
0-4,000 Lux
(Resolution: 0.1Lux)
0-200 KLux
(Resolution: 0.01KLux) |
Range:
0-5000mW/M²
0-10,000µW/Lumen |
| GS-71 |
External
Ultraviolet and Visible
Light with built in Temperature and Humidity |
 |
|
Temperature and humidity as GC-10.
For use with LS-70 Light and UV sensor
|
| Visible Light |
Ultra Violet light |
| Range:
0-4,000 Lux
(Resolution: 0.1Lux)
0-200 KLux
(Resolution: 0.01KLux) |
Range:
0-5000mW/M²
0-10,000µW/Lumen |
| GS-72 |
External
Ultraviolet and Visible
Light with external Temperature and Humidity |
 |
|
For use with Temperature and humidity probe
RHT10-D and LS-70 light and UV probe.
|
| Visible Light |
Ultra Violet light |
| Range:
0-4,000 Lux
(Resolution: 0.1Lux)
0-200 KLux
(Resolution: 0.01KLux) |
Range:
0-5000mW/M²
0-10,000µW/Lumen |
Model No. (Inputs) |
Pulse & Event |
| GC-60 |
State inputs |
|
| |
2 state indications |
| GS-61 |
State inputs |
|
|
8 state indications |
GS-62
GS-62a
|
Pulse
inputs - Voltage free or digital |
|
Pulse width:
Digital high/low:
Max pulse rate:
Max pulse count: |
>500uS
>2.5V/<1V
250Hz
216 (65,535) |
| |
The 'a' suffix indicates inverted logic. |
| Model No. |
Air Pressure |
GS-84
|
Built-in Differential
Air Pressure with Temperature
and Humidity |
| |
Temperature and humidity
as GC-10
Differential air pressure: 0-50-500 Pascal (typically 1% error)
|
Case Heights

The system allows for up to 250 sensors to be connected across 125 transmitters.
Typically, transmitters have 1,2,3 or 4 sensor input capability, however
up to 15 sensors is possible. Note that just one transmitter can provide
a cost effective system.
For detailed specifications please download the data
sheet.
Calibration
GenII transmitters with internal sensors have been designed for easy
calibration. The use of plug-in sensors means that calibrated sensors
can simply be exchanged on site. This reduces system down time, disruption
and ultimately cost.
Transmission
The transmitters send very brief data packets in time at user-defined,
pre-set intervals. It is normal to send several transmissions during the
logging interval to allow for the unlikely event that two transmissions
from separate transmitters may clash. The on air time is extremely
low and the transmitter sleep current is also very low, so that the batteries
in GenII transmitters have exceptionally long life, more than 5 years
without forfeiting accuracy or reliability.
Each transmitter battery voltage is monitored by the central Receiver
Logger, so the user can easily check out % battery remaining.
An alarm is raised when battery replacement is imminent.
Additionally, a system reliability indicator at the Receiver Logger shows
whether a good radio connection is available.
|