2TX Product Specifications (PDF)

2TX Operation Manual (PDF)


2TX Mounting Schematics (PDF)


2TX Hookup Schematic WITHOUT Preamp (PDF)


2TX Hookup Schematic WITH Preamp (PDF)

Guide to quick disconnect Q7M/Q7F snap cable system for ASTI 2TX/4TX transmitters

2TX 2-Wire Transmitter for pH, ORP and Temperature Measurements
  • Large LCD Display of pH or ORP plus Temperature
  • Power Down Flash Memory: Stores all calibration & parameter data even if the unit is powered down
  • 6 Button easy to use Keypad w/ Intuitive Large Screen LCD Menu
  • 1 or 2 Point pH Calibration
  • Buffer Select: (4.01, 7.00, 10.01) or (4.00, 6.86, 9.18)
  • Supports External Preamplifiers for Low-Noise Operation and Extended Cable Lengths up to 500 feet from 2TX meter
  • Wide Operational Range of 12 V to 36 V DC
  • Excellent Input / Output Signal Isolation
  • Scaleable 4 to 20 mA Output
  • EFF, Electrode Efficiency Function
  • Auto ATC Temperature Sensor Select or Manual ATC
  • 1/4 DIN, IP-65 Waterproof and Dustproof Enclosure
  • CE Approved

Reliable & Affordable Isolated 2-Wire Loop Powered pH & ORP Transmitter

COMPARISON CHART OF 3TX, 2TX & 4TX TRANSMITTERS

pH Range

-2.00 to 16.00 pH

mV Accuracy

±1 mV

pH Resolution

0.01 pH

Temperature Range

-10.0 to 120.0 °C

pH Accuracy

±0.01 pH

Temperature Resolution

0.1 °C

No. Of pH Calibration Points

Up to 2 points

Temperature Accuracy

±0.3°C

pH Buffer

(pH 4.01, 7.00, 10.01) or
(pH 4.00, 6.86, 9.18)

Temperature Sensor (for ATC)

PT100, PT1000, 3K Balco, 10K thermistor

PH Electrode Offset recognition

±90mV

Temperature Compensation

ATC / MAN

pH Electrode Slope recognition

±30%

Signal Output

4.0 to 20.0mA

Input Impedance (Ohms)

>1012

Under / Over range current output

3.80mA / 21.0 0mA

mV Range

-1000 to +1000 mV

Power Requirements

24V DC  (12V to 36V DC)

mV Resolution

1 mV

Dimension

¼ DIN, depth 148mm