Brainchild BTC-701,702,704 Analog Controller

This analog controller is used for simple applications with on/off or P control, without indication.

Feature

• Build-in Laser Trim ASIC
• Easy to change the range
• ON-OFFor time proportional selectable
• Compact, only 65mm in depth
• A wide selection of control output option
• A wide selection of ranges
• Sensor break protection
• Alarm option (BTC-704, BTC-702 Only)
• Low Cost
• EMC, LVD: CE

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Specification

Input

Thermocouple (T/C)	Type J, K
RTD	3-wires PT 100 ohms, DIN or JIS
Range	See ordering information
Accuracy	±2% of span (BTC-803), ±1% of span (BTC-805)
Cold Junction Compensation	±0.1°C / 1°C
Rejection of RTD Lead Resistance	( 0.1°C - 0.025% of PV reading) / ohm
Sensor Break Protection	Upscale
External Resistance	100 ohms max.
Normal Mode Rejection	60 dB
Common Mode Rejection	120 dB
Sample Rate	3 times / second

Control

Proportion Band	2.2% of span
ON-OFF Hysteresis	1 % of span
Cycle Time	20 seconds for relay output, 1 second for pulsed voltage output, 0.02 second for linear current or voltage output.
Control Action	Reverse action

Output

Control	Relay 5A / 240V max. resistive load
Pulsed Voltage	20mA / 32VDC max.
Current	4-20mA, 0-20mA, max. load 500 ohms
Voltage	0- 10V, min. load 500k ohms
Alarm	Relay output, 2A / 240VAC max. resistive load

Adjustment

Setpoint	Single turn wire wound potentiometer
Alarm	Deviation alarm, adjustable ±10% of span
Manual Reset	Adjustable 2.6% of span (BTC-704, 702 only)
Resolution of set point	0.2% of span
Accuracy of set point	±2% of span
Repeatability of set point	±0.1 % of span

Indication

Process Indicator	BTC-702: Deviation meter BTC-704: 10mm red 3-1/2 dight LED display
Status Indicator	ON red LED Lamp
Alarm Indicator	ON red LED Lamp

Power

• Rating: 90-240VAC, 50 / 60 Hz
• Consumption: Less than 5VA

Environmental & Physical

Operating Temperature	0-50°C
Humidity	0 to 90% RH (non-condensing)
Insulation	20M ohms min. (500VDC)
Breakdown	AC2000V，50/60Hz，1 minute
Vibration	10-55Hz，amplitude 1mm
Shock	200 m/s² (20g)
Weight	BTC-704: 240 grams, BTC-702: 320 grams, BTC-701: 290 grams
Dimension	72(W)X72(H)X65mm (depth behind the panel)
Panel cutout	68 X 68mm