CONTROLLERS > PANEL MOUNT
HI504 pH/ORP Controller with Sensor Check
™ SPECIFICATIONS
Programmable Hold System
Range
The hold function allows the user to stop the regulating action of the controller forprogrammable time periods. It is possible to activate the hold periods in correspondence
to programmed operations, such as plant maintenance, cleaning procedures and
instrument calibration.
-2.00 to 16.00 pH; -2000 to 2000 mV;
-30 to 130.0°C Resolution 0.01 pH; 1 mV/0.1°C above -10°C; 1°C below -10°C Accuracy (@20°C/68°F) ±0.02 pH; ±2 mV; ±0.5°C (-9.9 to 130.0°C);
±1°C (-30 to -10°C) Input Impedance 10
Fail-Safe Alarm System
HANNA instruments® exclusive Fail-safe Alarm System protects against problems caused by
power supply failure or signal interruption, which are typical risks in industrial environments.
The system acts both on a hardware and a software level. The alarm relay functions in a
normally closed condition, and is tripped when there is a power failure if, for example, the
power cable is accidentally cut. This function is very important in industrial plants where
alarms are usually not activated if there is a power supply interruption, which can cause seri-
ous damage due to a loss of control of the process plant. At the software level, the fail safe
function activates an alarm in case of abnormal circumstances, for example if the dosing con-
tacts remain closed for an excessive period. The alarm condition is also signaled by a red LED,
located directly on the front panel of the controller.
12 Ohm Digital Output Isolated output, contact closed upon HOLD mode Analog Output 1 or 2 independent outputs (configuring as 0-20 mA
or 4-20 mA) Dosing and Alarm Relay Temperature Compensation Electromechanical relay SPDT contact output;
5A-250VAC, 5A-30VDC (resistive load). Fuse
protected: 5A, 250V Quick Blow Fuse Automatic or manual, -30 to 130°C
Temperature probe Pt 100/Pt 1000 sensor (with automatic
recognition and damage test) Power Supply 24VDC/AC, 115VAC ±10%, 230VAC ±10%,
100VAC ±10%; 50/60Hz Environment 0 to 50°C (32 to 122°F); max 85% RH
non-condensing Casing
Logging of the Last 100 Events
IP54 (front panel)
With the HI 504 series, it is possible to recall the sequence of last 100 occurred events at any
time: errors, calibrations performed, set parameter changes and cleaning cycles. Every code
shown on the display corresponds to a certain type of event, error or operation. Errors that are
still active are indicated by a flashing code, while operations and alarms recorded or already
concluded appear with a fixed code on the display.
Dimensions Panel cutout: 140 x 140 mm,
instrument: 144 x 144 x 170mm Weight 1.6 kg (3.5 lb.)
Analog Output: Data logging or PID Dosage Control
Models are available with one or two analog outputs. These outputs can be connected to a
recorder for the cataloging of process data (pH/mV and temperature), or can be used for con-
trolling dosing systems (pumps or electrovalves) using Pid control.
UL Certification
The HI 504 process controller series complies with the production standards required
by the Underwriters Laboratories (UL), one of the most important international
authorities for device safety, and has obtained the following UL certification:
ORDERING INFORMATION:
X =1, single setpoint Each HI 504 model is supplied completewith mounting brackets and instruction
manual. Match the last letters in the prod-
uct code to the corresponding numbers
according to desired configuration. X =2, dual setpoint X =8, single setpoint & advanced cleaning X =9, dual setpoint & advanced cleaning Y =1, ON/OFF control
For a complete range of pHelectrodes,see pages 63-71 Y =2, ON/OFF &PID control Z =2, single analog output Z =4, dual analog output a =0, 24 VDC/AC power supply
HI504XYZ-a
a =1, 115VAC power supply a =2, 230VAC power supply a =3, 100VAC power supply
ACCESSORIES:
HI 504900 GSM module* HI 7004/1L pH 4.01 buffer solution, 1 L bottle HI 504901 GSM supervisor HI 7006/1L pH 6.86 buffer solution, 1 L bottle HI 504902 RS485 modem (PSTN) HI 7007/1L pH 7.01 buffer solution, 1 L bottle HI 504910 Digital transmitter HI 7009/1L pH 9.18 buffer solution, 1 L bottle HI 92500 Windows® compatible software HI 7010/1L pH 10.01 buffer solution, 1 L bottle HI 7610 Stainless steel temperature probe with Pt100 sensor and 5 m cable HI 7020L 200-275 mV test solution,500 mL bottle HI 7611 Stainless steel temperature probe with Pt1000 sensor and 5 m cable HI 7091L Reducing solution, 500 mL bottle HI 7092L Oxidizing solution, 500 mL bottle
* A SIM card for HI 504900 must be purchased separately by an outside provider and is not in any way covered by HANNA Instruments® Industrial Products Catalog
• www.hannainst.com
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