pH Amp
- Product#
ML165
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Overview:
The pH Amp is a dual front-end suitable for use with pH, ion-selective and potentiometric redox electrodes. 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:
MLA060 Redox Electrode
MLA042 pH Electrode
MLT5733 pH Electrode - Tuff tip for student use
Hardware:
ADInstruments signal conditioners only function with PowerLab data acquisition units and therefore are not suitable for use with other data acquisition systems.
Applications:
The pH Amp may be used with either combination electrodes or electrodes with a separate reference electrode. With a suitable electrode, parameters such as pH, redox potential, dissolved carbon dioxide and ammonia can be measured in aqueous solution. Ion selective electrodes are available for many ionic species including sodium, potassium, calcium, chloride, fluoride, nitrate and sulfide.For more information visit the pH & Ionic Concentrations application page.
Specifications:
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
±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 μVrms (<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 Temp 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
±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): 50 mm × 76 mm × 260 mm(1.96" × 3.0" × 10.2")
- Weight: 0.8 kg (1.8 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.
