The PHTM Series pH two wire transmitter is designed
to provide a standard 4 to 20 mA current output which is
proportional to the pH being measured. Its small size and
encapsulated construction allow for easy installation and
will accommodate any pH electrode with a BNC connector.
Temperature compensation is either manual or automatic with
use of any 1000 ohm Platinum RTD.
The PHTM-014 covers the full 0 to 14 pH range. The
PHTM-212 with a 2 to 12 pH input is the popular choice
for use with recorders or any application where it is convenient
to divide the 4 to 20 mA output into ten divisions.
The PHTM-ORP is for an ORP electrode input with a range of 0 to 1000 mV.
PHT422I features include a NEMA-4X housing, an integral
LCD display for continuous pH reading or for a direct corresponding
readout in milliamps, using a convenient push-button switch.
The 4-20 mA output signal may be scaled in the field to
meet specific pH ranges in any 1 to 14 pH unit increment.
Temperature compensation is manual using a fixed resistor
or automatic using any of NEWPORT's 700 Series thermistors. |
Isolated 4-20 mA Transmitter.
pH Electrodes purchased separately.
Range: 0 to 14 pH, 2 to 12 pH, 0 to 1000 mV
PHTM-014: 0 to 14 pH
PHTM-212: 2 to 12 pH
PHTM-ORP: 0 to 1000 mV
PHT442I: Any 1 to 14 pH unit, user selectable output
Accuracy: ±0.02 pH
PHTM: ±1.0 mV
PHTM-212, PHTM-ORP: -25 to 70ºC (-13 to 158ºF)
-10 to 60ºC (14 to 140ºF)
PHTM-212, 1000 ohm RTD
NEWPORT 700 Series thermistor
Input Impedance: >1013 Ohms
Power Input: 12 to 80 Vdc (24 Vdc recommended)
PHTM-014: Non-isolated 4 to 20 mA
PHTM-212: Non-isolated 4 to 20 mA
PHTM-ORP: Non-isolated 4 to 20 mA
PHT422I: Isolated 4 to 20 mA
Input to Output Isolation: PHT422I, 600 V maximum
PHTM-014, PHTM-212, PHTM-ORP: 57.4 H x 38.1 W x 38.1 mm D (2.25" x 1.5"
PHT422I: 125 H x 74.2 W x 99.6 mm D (4.92" x 2.92" x 3.92")
PHT422I: 3 1/2 digit LCD
PHT422I: 0.01 pH
|† All dollar amounts on this site are shown in US currency.
Note: Each unit comes complete with operator's manual.
Ordering Example: (1) PHT422I isolated 4 to 20 mA pH transmitter with integral display and NEMA 4X enclosure, (1) PSS-D12B power supply = $665
|Keywords: Industrial pH Two Wire 4-20 mA Transmitters, 2-wire transmitter|
Back to top