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ALTEK > Thermocouple 교정기기 > Thermocouple 교정기기 (322-1)

 

 
Thermocouple 교정기기 (322-1)

 

 

 

 

모델

:

322-1

제조사

:

ALTEK

원산지

:

미국
 

 
상품 상세 설명
 
• Description

Source and read T/C’s over the entire industrial temperature range with Altek’s Model 322 Thermocouple Calibrator. Use with transmitters, recorders, controllers, alarms, indicators, data acquisition and computer systems. Switch between four T/C types or millivolts.

High accuracy and stability is achieved through Altek’s exclusive isothermal block. Make your connections directly with thermocouple wire or with miniature thermocouple connectors.

Field customize the Model 322 to lock-in 0.1° or 1° resolution, fixed °F or °C or front panel selectable °F/°C operation. A shrouded miniature thermocouple connector receptacle plus terminal screws allow for easy hookups. Built in protection guards the Model 322 against mis-connection to 120 Volts AC or DC, in any mode.

The Model 322 turns on to the T/C type last used. Other T/C types may be selected each time the unit is turned on. Other T/C types may be selected each time the unit is turned on. If you always use just one T/C type, lock in the selected T/C type with the internal DIP switch to prevent accidental change to an unwanted type.

Select resolution of 0.1° or 1° for the full listed range of all thermocouple types. Millivolts allows 1 microvolt resolution from -99.999 to 99.999mV. The Model 322 simulates key temperatures for repetitive calibrations. “Quik-Chek” function stores three output temperatures for each T/C type (15 total) for real convenience. Three memories are retained for each thermocouple type even when the power is off.

Turn the knob to check trip points, controller action or hysteresis. The fast response 322 sets quickly without overshoot but allows slow changes at your rate.

The Model 322 display gives you fast, accurate temperature measurement with 0.1 and 1 degree or with 0.001 millivolt resolution. High resistance or open T/Cs and leads are detected and indicated on the LCD display. Two readings per second track fast moving temperatures.

“MAX” and “MIN” memories are continuously updated from turn-on or whenever the “RESET” pushbutton is pressed. The Model 322 gives you a handy tool to monitor temperatures for drift or control deviation. Just flip the “Quik-Chek” switch to display the minimum and maximum temperature since reset.

Each time the Model 322 is turned on, the LCD will display all segments for 1 second. It then displays the currently selected thermocouple type or mV for approximately 3 seconds. If °C/°F operation has been selected the currently selected temperature scale of °C or °F will display.

• Specifications

Thermocouple Simulator (Source)

 

Output Impedance:

Less than 0.1 ohms

Source Current:

Up to 8 mA (drives 80mV into 10 ohms)

Output Noise:

Less than 4 microvolts p-p for frequencies of 10 Hz or below

Overload:

Indicates OVER and blanks digits on the display

Read a Thermocouple

 

Input Impedance:

> 10 Megohms

Open Thermocouple Detection:

450 millisecond check pulse. Nominal threshold, 10 K ohms.
Displays " _ _ _ _" for open circuit.

Normal Mode Rejection:

50/60 Hz, 50 dB

Common Mode Rejection:

50/60 Hz, 120 db

General

 

Accuracy:

±(0.008% of reading + 0.006 mV)

Cold Junction Compensation:

Built-in for specific thermocouple type, characterized to T/C curve

Cold Junction Temperature Effect:

Within 0.05° per °C change in ambient temperature over operating range

Operating Temperature Range:

-5 to +140° F (-20 to +60° C)

Storage Temperature Range:

-22 to +175° F (-30 to +80° C)

Relative Humidity:

10 to 90%, non-condensing

Zero Stability:

Included in cold junction effect

Warm up Time:

1 minute to full rated accuracy

Overload Protection:

120 Volts AC/DC for 30 seconds on connecting leads, in any mode

Battery Life:

9-volt Alkaline Battery - Nominal 40 hours

Low Battery Indicator:

"BAT" indication on LCD at 7 Volts nominal, approximately 10 hours left; Batteries should be removed when storing the unit for longer than three months.

Reference Drift:

Less than 10 PPM/°C

Dimensions:

63.5mm x 66.7mm x 130mm

Weight:

10.9oz (0.31 kg)

 

 

 

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