CTPH -Introduction

INTRODUCTION This Electronic pH and Temperature Chart Recorder with Remote Sensor is an advanced microcomputer controlled measuring and recording instrument.

The recorder affords rapid and precise response, memory and display of peak readings, remote sensing, recording flexibility and simplicity of operation. This compact, portable instrument offers advanced features previously unavailable in its price range.

Features include:

Continuous Update of Fluid pH and Temperature
Rapid Response to Changes in Fluid pH and Temperature
Remote Mount Sensor
Digital Plots in 1.0 ░C or 0.1pH Increments
Memory and Display of Peak Readings
1, 7 or 32 Day Charts
Battery or ac Power Operation With Automatic Battery Power Backup
Chart Indication for ac Power Failure/ac Power Return
Audible Alarm with Relay Contact
Low Battery Indicator
Portable
Wall Mount or Benchtop Mount
Optional Analog Voltage Input Adapter to record an external -296 to 414mV dc signal through a standard BNC connector
Chart Lighting with use of ac adaptor
Control Panel Lock
Decorative Foot Cover for wall mounting

Parts of the Recorder

Figure 1-1. Front and Side Views of the Recorder

Parts of the Recorder

Figure 1-2. Rear View

Item	DESCRIPTION	Function
1	Chart Paper Knob (magnetic)	Holds chart paper in place.
2	Light Bulbs	Lights up the paper in a dark room. Note that the bulbs function only when the recorder is powered by the 9Vdc adapter.
3	Pen Cap	3 Posts Holds the loose pen caps.
4	Time Set Arrow	Helps align the time on the new chart paper with the actual time.
5	Chart Paper (double sided)	Charts are available for 1, 7, and 32 day recording times. See the inside back cover for a detailed list of paper available.
6	ac Power Jack Allows	the unit to be powered from ac power using the ac adaptor (110Vac stepped down to 9Vdc) supplied.
7	Power Switch	Selects Cal mode for pH sensor calibration, using the adjustments inside cover, or normal operation mode .
8	Cal/Normal Mode Switch	Selects Cal mode for pH sensor calibration, using the adjustments inside cover, or normal operation mode .
9	1/7/32 Day Mode Switch	Selects chart type: 1, 7, or 32 day operation.
10	Alarm Display Buttons These buttons are accessible behind the control panel door. (HIGH, SET, LOW)	High and Low buttons: 1. Selects and changes calibration codes. 2. Chooses the high/low alarm limit (for either ░C or pH). 3. Selects and changes the alarm limits. 4. Checks alarm limits in operating mode. 5. Low button only: when pressed during power up, disables the alarm function. Set button: 1. Activates calibration mode when pressed during power up. 2. Enters calibration codes in memory. 3. Activates alarm limits. 4. Enters alarm limits in memory. 5. Disables the sounding of the alarm (and activation of the relay) for 10 seconds.
11	LCD Display	Displays temperature and pH values (depending on the setting of Display Selection Switch).
12	Display Selection	Switch Allows the user to select display pH or fluid temperature in ░C . (Refer also to item #10).
13	Pen Arm and Holder (2 each)	Holds and moves the pH and temperature pens.
14	Latch Button	Releases and secures the recorderÆs door.
15	Control Panel Door	Lock Locks or unlocks the control panel door
16	Decorative Foot Cover	Stays in place for wall-mounting the recorder. Removed for upright bench-top use.
17	Control Panel Door	Covers the alarm display buttons (High, Set, and Low), power switch, 1/7/32 day mode switch, and Cal/Normal mode switch.
18	Light Bulb	Push Button Turns the light bulbs on and off.
21	ôKeyholeö Slot Mounting	Holes Allows the recorder to be mounted on the wall.
22	Carrying Slot	Allows the user to carry the recorder conveniently.
23	Product Label	Product information label.
24	Alarm/Relay Contacts	Allows the user to hook up an external, dry contact alarm to the recorder.
25	Battery Compartment	Holds 4 ôDö size batteries which provide power if the ac adaptor is not used, or with adapter, provide power backup in case of ac power failure.

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