pH Amp

Overview

The pH Amp is a dual front-end suitable for use with pH, ion-selective and potentiometric redox electrodes and is designed to work with a C Series Front End Interface or traditional PowerLab. The unit is capable of measuring pH in the range 0-14, electrode voltages to 2.0 V and temperature in the range of 0 to 100 °C. It can also be used for temperature compensated measurements or as an independent temperature sensor. The unit is supplied with a RTD Temperature Probe.

Transducers and Accessories suitable for use with the pH Amp:

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Details and Tech Specs

Technical

pH Amplifier Section

pH Amplifier: High impedance, electrometer type
Amplification range: ±2 V down to ±200 µV full scale in 13 steps

Full Scale	Resolution
±2 V	1 mV
±1 V	500 µV
±500 mV	250 µV
±200 mV	100 µV
±100 mV	50 µV
±50 mV	25 µV
±20 mV	10 µV
±10 mV	5 µV
±5 mV	2.5 µV
±2 mV	1 µV
±1 mV	500 nV
±500 µV	250 nV
±200 µV	100 nV

Input impedance: 10¹³Ω typical
Amplifier noise: <1 µV_rms (<4 µV p-p) with a bandwidth of DC- 10 Hz
Maximum input: ±10 V
Input connection type: Insulated BNC
Low pass filter: 10 Hz (-3 dB frequency)
Low pass filter accuracy: ±3.0 %
Low pass filter type: Bessel (2 pole)

Temperature Amp Section

Temperature probe type: RTD 100 Ω type (supplied with unit)
Temperature range: ±100 °C
Temperature accuracy: ±0.2 °C
Amplifier output: 0 V @ 0 °C, 50 mV/ °C (factory set)
Output ranges:

Range	Temperature	Resolution
±10 V	±200 °C	0.1 °C
±5 V	±100 °C	0.05 °C
±2 V	±40 °C	0.02 °C
±1 V	±20 °C	0.01 °C
±500 mV	±10 °C	0.01 °C

Input connection: 3 pin mini-audio jack

Control Port

I²C: Provides control and power

Physical Configuration

Dimensions (h × w × d): 55 mm × 120 mm × 260 mm (2.2" × 4.7" × 10.2")
Weight: 1.2 kg (~2.6 lb)
Power consumption: ~1 W
Operating temperature range: 0 to 35 °C, 0 to 90 % humidity (non-condensing)

ADInstruments reserves the right to alter these specifications at any time.

Product Code

FE165

pH Amp

ce

Data Cards

pH Amp Data Card

Compatibility

FE165

	Operating System	Recommended Hardware	Alternate Hardware
LabChart Lightning	Mac/Windows	PowerLab C + Front End Interface	Traditional PowerLab
LabChart 8	Mac/Windows	PowerLab C + Front End Interface	Traditional PowerLab