Hofmann PMH-2 Скачать руководство пользователя страница 4 | Manualshive

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Relay 1:

240 VAC, 5 Amps max. Resistive load. 3 terminals

provide earth, neutral and switched active. 5A fuse

protects instrument and relay output.

Relay 2 / Alarm:

Potential free contacts.

Power:

240VAC 50Hz 7.5VA max. Hardwired with screw

terminals located under sub panel. 3 way terminal

providing 240VAC (A, N, E) located next to potential

free contacts allows for easy wiring of this terminal.

Housing:

Fully sealed construction with hinged clear acrylic

front cover. IP55 specifications.

Dimensions:

166mm x 160mm x 105mm.

PAGE 4

PMH-2 Instruction manual

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Содержание PMH-2

Страница 1: ...DIGITAL pH ORP mV CONTROLLER PMH 2 USERS GUIDE PMH 2 Instruction manual PAGE 1...

Страница 2: ...PMH 2 10 Signal output 11 Electrodes 11 Starting up the Instrument 11 CONFIGURATION 12 Looking at menus and values 12 Default values for the PMH 2 instrument 13 Saving Values in Configuration 14 OPERA...

Страница 3: ...H mode Temperature range from 0 to 100o C Automatic compensation possible with a TP 100 electrode connected Signal output 4 20mA software configuration over range 0 14pH or 0 1000mV Current output ful...

Страница 4: ...e contacts Power 240VAC 50Hz 7 5VA max Hardwired with screw terminals located under sub panel 3 way terminal providing 240VAC A N E located next to potential free contacts allows for easy wiring of th...

Страница 5: ...low and high points etc The desired value is selected and saved by pushing the rotary encoder knob The rotary encoder only becomes active if invoked through the instrument configuration program This f...

Страница 6: ...eature avoids setpoint or calibration values being changed inadvertently Three modes of set point control are possible with Relay1 Normal dosing nor This is the normal dosing mode with simple on off o...

Страница 7: ...t a corresponding increase in pH is recognized as a possible failure The output begins to pulse preventing overdosing The pulse output exhibits a very wide duty cycle The ON and OFF times are both dyn...

Страница 8: ...ured to perform as a second setpoint relay in either up or down mode The flow switch input is configured to operate as N O or N C normally open or normally closed If no flow is detected relay 1 and re...

Страница 9: ...trodes used for redox measurements are of much lower resistance and longer coaxial cables can be used without any special precautions Insert a round headed screw into the panel where the instrument is...

Страница 10: ...onnected A suppression capacitor is already connected to filter electrical spikes caused by switching solenoid valves The ALARM relay2 terminal has potential free contacts N O C N C You need to determ...

Страница 11: ...trode and controller exceeds 10 meters Special consideration also must be given when placing an electrode in a treatment bath or pool The point of injection of neutralising agent and placement of the...

Страница 12: ...ly Low high alarm or dosing mode for relay2 Flow switch 4 20mA Signal End The corresponding LED lights up for each of the above position to show which mode is indicated with the LCD display The next s...

Страница 13: ...4mA 000mV 000 20mA 1000mV 1000 pH MODE Dosing UP UP Setpoint 7 00 7 00 Dosing Mode normal dosing no d Temperature Compensation Manual 20 0o C S oC 20 0 Low Alarm pH 2 00 2 00 High Alarm pH 10 00 10 0...

Страница 14: ...flashes twice SAVE Clockwise direction of the encoder knob Rotate CW Counter clockwise direction of the encoder knob Rotate CCW Either direction of the encoder Rotate F To change large numbers quickly...

Страница 15: ...o pH7 00 500mV 20mA range is from pH8 00 600mV to pH14 00 1000 mV Only the 20mA slope is entered in mA Setpoint Range for the mA slope is 0 5 to 5 00pH 50 to 500 mV 4mA always is setpoint It is import...

Страница 16: ...PAGE 16 PMH 2 Instruction manual...

Страница 17: ...PMH 2 Instruction manual PAGE 17...

Страница 18: ...case PUSH twice adjust pH mV for correct value and repeat offset calibration A slope calibration can be performed if the pH is lower than 5 5 or higher than 8 5 or in mV mode between 280mV and 900mV T...

Страница 19: ...adjustments increase or de crease the reading regardless of the absolute measured value pH7 is a prefixed iso potential and increasing the slope always moves the reading away from pH7 Readings below p...

Страница 20: ...higher than 8 50 The display shows Err if a value inside these parameters is present PUSH two times the display then shows live pH to allow the operator to correct for a valid pH value PUSH now return...

Страница 21: ...lid mV offset value PRESS now returns to the calibration menu to repeat the procedure F Set the simulator mV output higher than 280mV PUSH turns on the SLOPE right side LED PUSH again the LED now flas...

Страница 22: ...d off once the input mV moves toward the setpoint The difference of input signal versus setpoint is controlled by the amount of gradient set in the configuration program The lowest setting of 10 start...

Страница 23: ...ling tower or other plant installa tions Dosing for an excessive period of time without a corre sponding movement in mV is recognized as a possible failure The output begins to pulse preventing overdo...

Страница 24: ...tch is used The term normally closed is used if the contacts are closed with flow and open if flow stops Select CL mode for this type of switch If it is not certain what type of switch is in the syste...

Страница 25: ...mV Example Mode is UP setpoint is 650 m and mA slope is set at 200 mV Signal current output is 20mA as long as the mV is below 450 mV starts to decrease as the mV moves to 950 at which point signal c...

Страница 26: ...and connected appliance or computer interface 4 20 mode is only a utility program to assist for testing and no modes or values are changed or saved when using or exiting this mode The current output...

Страница 27: ...ool Chlorine is a caustic liquid and increases the pH level when added to the pool water The PMH 2 connected to a pH electrode maintains pH at 7 2 to 7 6 by dosing acidic neutraliser The electrodes ar...

Страница 28: ...ty does not cover any carriage costs The warranty is void if The instrument is damaged due to rough handling or transport after purchase The article has not been used in accordance with the operating...

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