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Products > Amplifiers for Electrodes
Transmitter Amplifers for Electrodes
Transmit and Amplify the signals of Ion/ORP/pH/D.O. electrodes or Temperature Sensor to Data Loggers, Data Acquisition Systems, Displays, Controllers and other Instruments


Which Electrode and Sensor Signal Transmitter Amplifers to Choose?
Order Code
Input
Output
Power Supply
Max. Distance
Channels Isolated
No. of Electrode
Unit Price Ex VAT (GBP)
TRA-IS1-B pH / ORP / Ion (mV)
mV, 1:1 , 1:5
Battery
(3 Year)
50 meters No
1x pH/ORP/Ion Electrode
120.00
TRA-DOG-B
Dissolved Oxygen (µA)
mV Battery
(3 Year)
50 meters No 1 x Dissolved Oxygen Electrode 120.00
TRA-NTC-B Temperature (°C) mV Battery
(3 Year)
50 meters No 1x Temperature Sensor (NTC) 120.00
LAB-EA4-C pH / ORP / Ion (mV)
mV, 1:2
12 V DC 50 meters No
4x pH/ORP/Ion Electrode
260.00
LAB-EA4-CI pH / ORP / Ion (mV)
mV, 1:2
12 V DC 50 meters Yes
4x pH/ORP/Ion Electrode
350.00

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TRA-IS1-B Transmitter Amplifier
for pH / ORP / Ion
1-Channel Battery Powered Electrode Transmitter Amplifier for
pH / ORP / ISE (Ion-Selective Electrode)

  • Dimensions: 100 x 70 x 50 mm plus 15 mm Flanges
  • Mounting: 4 Drill holes with 5 mm Diameter on both flanges
  • Enclosure: ABS, Protection Class: IP 52 (NEMA 2/3)
  • Net Weight: 165 g (Including Batteries and BNC Cap)
  • Connectors:
    One BNC Socket (50 Ohm type ) for Electrode signal Input;
    One 2mm socket for external Reference Electrode;
    One BNC Socket (50 Ohm type) for Electrode Output. An Adaper for BNC to Screw-Terminal is supplied.
  • Power Supply: 2 Li-Mn Batteries(CR2032) last for 3 years
  • Input Resistance: typical 1 Terra Ohm (10 exp 12 Ohm)
  • Input Bias Current: typical 0.1 pA (10 exp -13)
  • Load Resistance: must be 250 kOhm or higher
  • Transfer Characteristic: 2 modes
    On-board Jumper settings:
    1:1 - when the Jumper Jp1 is Open, the Input mV range and the Output mV range are ±2000 mV;
    1:5 - when Jumper Jp1 is Closed, the Input mV range is ±400 mV, and the Output range is ±2000 mV.
 
   
 
TRA-DOG-B Transmitter Amplifier
for
Dissolved Oxygen (D.O.)
1-Channel Battery Powered Electrode Transmitter Amplifier for
Dissolved Oxygen Electrode (D.O.
Galvanic)
  • Dimensions: 100 x 70 x 50 mm plus 15 mm Flanges
  • Mounting: 4 Drill holes with 5 mm Diameter on both flanges
  • Enclosure: ABS, Protection Class: IP 52 (NEMA 2/3)
  • Net Weight: 165 g (Including Batteries and BNC Caps)
  • Connectors:
    One mini DIN Socket for Electrode signal Input;
    One BNC Socket for Electrode Output. An Adaper for BNC to Screw-Terminal is supplied.
  • Power Supply: 2 Li-Mn Batteries(CR2032) last for 3 years
  • Input Resistance: 10 kOhm
  • Load Resistance: must be 250 kOhm or higher
  • Transfer Characteristic:
    The electrode's Input current of 10 µA gives Output of 2000 mV
  • Designed to work with EAI D.O.Galvani
 
   
 
TRA-NTC-B Transmitter Amplifier
for
Temperature (NTC)
1-Channel Battery Powered Sensor Transmitter Amplifier for Temperature (NTC)

Compatible
with all type of NTC Temperature Sensor (3.5 mm mono-audio/jack plug), including EAI TS-NTC
  • Dimensions: 115 x 90 x 55 mm (without connectors)
  • Mounting: Can be wall-mounted (4 x M4 screw)
  • Enclosure: ABS, Protection Class: IP 52 (NEMA 2/3)
  • Connectors:
    One 3.5 mm mono Audio Jack plug for Sensor signal Input
    One BNC Socket for Electrode Output. An Adaper for BNC to Screw-Terminal is supplied
  • Power Supply: 2 Li-Mn Batteries last for 3 years
  • Load Resistance: must be 250 kOhm or higher
  • Compatible Temperature Sensor Element:
    Siemens/Matsushita NTC thermistor R-T curve-matched B57863-S104-F9 or matching type of other manufacturers
  • Transfer Characteristic:
    Non-linear according to NTC thermistor R-T curve-matched


 
   
 
LAB-EA4-C Transmitter Amplifier
for pH / ORP / Ion
4-Channel Electrode Transmitter Amplifier
for pH / ORP / Ion Selective Electrode
(
Non-isolated)

Suitable when measuring in up to 4 separate vessels (e.g. Glass or Plastic beakers) where the solutions have no electric connection.
  • Enclosure: ABS, Dimensions: 190x135x40 mm, IP 50, 400g
  • Power Supply: 12 V DC, Stabilized Switching
  • Input Resistance: Typical 1 Terra Ohm (10 exp 12 Ohm)
  • Input Bias Current: Typical 0.1 pA (10 exp -13)
  • Output Load Resistance: must be 10 kOhm or higher
  • Input Channels:
    4 x
    BNC Connector for pH/ORP/ISE (Ion Selective Electrode)
    4 x
    2mm socket for external Reference Electrodes
  • Output: ± Voltage via a 25-way sub-D Connector
  • Transfer Characteristic:
    ±1500 mV input gives ±3000 mV Output(1:2 transfer)
  • Isolation:
    Non-isolated, one common Ground for all 4 Channels Inputs and Outputs.
    All BNC casings and 2-mm Reference sockets are connected
    If there is a risk of electrical "Ground Loops" please use the LAB-EA4-CI, where the 4 channels are "Galvanically Isolated" from each other
 
 
  •  Analogue Signal Output and DC Power Input for
     LAB-EA4-C and LAB-EA4-CI
  • 25 Way Sub-D Plug Connector Kit and 4-Channel Input/Output Mapping are supplied
 
LAB-EA4-CI Transmitter Amplifier
for pH / ORP / Ion

4-Channel Electrode
Transmitter
Amplifier
for pH / ORP / Ion Selective Electrode  (
isolated)


Suitable for measuring up to 4 electrodes
(e.g pH, ORP, Ion-Selective) in 4 separate vessels or up to 4 electrodes in one vessel

  • Enclosure: ABS, Dimensions: 190x135x40 mm, IP 50, 400g
  • Power Supply: 12 V DC, Stabilized Switching
  • Input Resistance: Typical 1 Terra Ohm (10 exp 12 Ohm)
  • Input Bias Current: Typical 0.1 pA (10 exp -13)
  • Output Load Resistance: must be 10 kOhm or higher
  • Input Channels:
    4 x
    BNC Connector for pH/ORP/ISE (Ion Selective Electrode)
    4 x
    2mm socket for external Reference Electrodes
  • Output: ± Voltage via a 25-way sub-D Connector
  • Transfer Characteristic:
    ±1500 mV input gives ±3000 mV Output(1:2 transfer)
  • Isolation:
    4 High-quality Electrode Amplifier Channels with complete Isolation.
    Each Channel has its own Ground (GND) which is not connected to the GNDs of the other Channels. Thus, Electrical "Ground Loops" are avoided as the 4 channels are "Galvanically Isolated" from each other.
    The Input Ground of each channel is connected to the Output Ground of each channel, when using a Data Acquisition System, use it in "Differential Input" or "Isolated Inputs" Mode to get the best results in respect of interference and signal noise
 
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