Compact Process Analyzers For Current, Voltage and Frequency

Model CL-304

• Calibrate, Indicate and Test 4-20mA Systems
• Triple Function: Source, Read & 2-Wire Simulate
• Precise 3 1/2 Digit LCD Display
• Zero and Full Scale Functions

Model CL-305

• Calibrate, Indicate and Test Voltage Signals
• Volts- 3 Way

Voltage Source
Voltage Sink
Voltage Read

• Three Ranges

0.0 to 199.9 mV
0.00 to 19.99 mV
0 to 100% (1 to 5 V)

• User Adjustable HI and LO Plus Continuous Dial

Model CL-306
• For Calibrating Frequency Readouts
• Direct 0.5 Hz to 60 kHz Output in 40 Steps
• Tuning Fork Crystal for 0.0008% Accuracy
• ±0.001% per Degree C Stability
• Zero Based and Zero Center Outputs

Common Specifications:
CL-304 and CL-305

Display: 3 1/2 Digit LCD
Battery in Case: 3 x 9 volt alkaline; included
Display: Liquid Crystal; 3 1/2 digit
Operating Ambient Temperature: -5 to 140°F (-20 to +60°C)
Relative Humidity: 10 to 90% non-condensing
Storage Temperature: -22 to +175°F (-30 to +80°C)
Dimensions: 2 1/2 x 2 5/8 x 5 1/8 inch (63.5 x 66.7 x 130mm)
Weight: 12.5 oz (.35 kg)

Model CL-304
Specifications:

(Unless otherwise indicated, specifications are in % of 16 mA span)
Accuracy: ±0.1%; ±1/2 digit
Display Ranges: 0.00 to 19.99 mA (-25.0 to +125.0%)
Resolution: 0.1% 0.01 mA
Read Protection: Limited to nominal 25 mA against accidental misconnection
Output/2-Wire Ranges: 0 to 24 mA dc (-25 to +125%) continuous
Quick Check Settings: 4.00 and 20.00 mA (00.0 and 100.0%)
Built-In Batteries: 3 x 9 volt alkaline MN1604; included
Power to External 2-Wire Transmitters: 24 volts
Battery Life: Source 20 hrs @ 20 mA continuous; Read and 2-wire mode, 150 hrs; alkaline
Loop Voltage Limits: 2-wire simulator mode; minimum, 2 Vdc maximum, 100Vdc

Model CL-305
Specifications:

(Unless otherwise indicated, specifications are in % of span at 25°C)
Accuracy: ±(0.05% of span +1 digit)
"Quick-Check": Factory preset at 0% and 100% (1 and 5 V)
Battery Life: 100 hrs, sourcing into high impedance loads; 20 hours @ 20 mA drain; alkaline
Source Current: 30 mA maximum
Sink Current: 20 mA maximum
Output Impedance: <0.3 ohm
Input Resistance (Read Mode): > 2 megohoms
Source Resistance Effect (Read Mode): 0.1% of span error per 2000 ohms
Overload Protection: Protected to 120 Vac or dc
Overload Indicator: Lamp indicates high current or misconnection
Short Circuit Duration: Continuous
Temperature coefficient: ±0.01% of span/°C (Based on 25°C ±25°C recommended range)

Adjustment Range	LO	HI
10 V	-0.1V to +1.5V	0.75V to 11V
0-100%	-25% to +12%	-10% to 199%
100mV	-4mV to +25mV	10mV to 199mV




To Order (Specify Model No.)
Model No.	Price	Description
CL-304	$ 420	4-20 mA Analyzer
CL-305	440	Voltage Analyzer
CL-306	195	Frequency Calibrator
CL-303-AD120	28	110V ac adaptor for CL-304, CL-305
CL-328	1295	Multifunction Loop Calibrator

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