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The Hach si792P pH/ORP 2-wire Transmitter is full-featured and intuitive to operate. Combined with Hach world-class differential pH/ORP technology, the system provides the most accurate and reliable data available for monitoring pH/ORP. Rugged construction is designed for Class I, Division 2 (C I, D 2) or Class I, Division 1 (C I, D 1) applications. Digital communication capabilities are available.
The Hach si792 P pH/ORP 2-wire Transmitter is designed for use with the following Hach GLI world-class sensors: (1) pHD and LCP differential pH and ORP sensors and (2) Conventional combination technology pH and ORP sensors
The si792 P transmitter is available with digital communication functionality to connect easily to a communication network of choice, including HART®, PROFIBUS PA, or Foundation® Fieldbus.
The si792 P transmitter is available as Class I, Division 2 (C I, D 2) with HART communications only or as intrinsically safe, Class I, Division 1 (C I, D 1) with HART, PROFIBUS PA, or Foundation Fieldbus. FM, CSA, and ATEX certified.
A logical menu structure, combined with icon based messages allows for intuitive operation. The large, clear liquid crystal display shows the measurement value, process temperature, and sensor and transmitter status. A transmitter or sensor error is indicated by a bright red LED and a message is displayed.
The si792 P transmitter performs self-diagnostics and sensor monitoring such as asymmetry potential, slope, response time, cable integrity, glass, and reference impedance.
Controller, User Manual
Communication:HART: digital communication by FSK modulation of loop current, reading of device identification, measured values, status and messages, reading and writing of parameters,
Communication 2:start of product calibration, signaling of configuration changes according to FDA 21 CFR Part 11
Current Input:< glass electrode
Current Input 2:reference electrode
Current Output:to floating (3.80–22.00 mA specifiable)
Depth:105 mm
Dimensions (H x W x D):5.7 in x 5.7 in x 4.1 in (144 mm x 144 mm x 105 mm)
Display:LCD
Enclosure Rating:IP65
Inputs:Entrada de sensores de pH u ORP diferenciales (series LCP y pHD)
Entrada del electrodo de vidrio o electrodo ORP (por ejemplo, series PC y RC)
Entrada del electrodo de referencia
Entrada del electrodo auxiliar para la medición de impedancia (SG)
Entrada 1 del electrodo de vidrio
Resistencia de la entrada: >0.5 x 1012 ohms
Corriente de entrada: <2 x 10-12 A)
Entrada 1 del electrodo de referencia
Resistencia de la entrada: >1 x 1010 ohms
Corriente de entrada: <1 x 10-10 A
Entrada de temperatura
Selección de PT 100 / PT 1000 / NTC 300 ohms
Material:PBT (polybutylene terephthalate)
Measuring Principle:Two wire transmitter
Measuring Range:pH: -2.00 a 16.00
ORP: -1500 a 1500 mV
Temperatura: -20.0 a 150.0°C (-4 a 302°F) para PT 100, PT 1000; -20.0 a 110.0°C (-4 to 230°F) para NTC 300 ohms
Memory Backup:> 10 years Parameters and calibration data (EEPROM)
Mounting:Muro, panel o tubo (horizontal y vertical)
Operating Temperature Range:-20 to 110 °C NTC 300 Ω
Outputs:4-20 mA output / bus connection galvanically separated
Power Requirements (Voltage):14 - 30 V DC
Range:-1500 to 1500 mV
Relative Humidity:10 a 80 %, sin condensación
Storage Conditions:-20 °C to 70 °C
Strain Reliefs:2 knockouts for ½ inch NPT or rigid metallic conduit, 3 knockouts for M20 x 1.5
Temperature Compensation:Linear -19.99 to 19.99%/K (reference temperature 25°C)
Weight:2.2 lbs. (1 kg)
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