6 Draw a circuit labeling all components for a device to mea

6.) Draw a circuit labeling all components for a device to measure temperature and convert the temperature to a 0 to 10 VDC single for a 0 to 500 °C input using the AD594

Solution

2T is a heating or cooling temperature controller, with a timer-control- led outlet for forced defrosting or programmed liquid agitation. It include inputs for NTC, Pt100, or Pt1000 thermistor type temperature sensors, or for J/K/T type thermocouples, including sensor offset correction capabili- ties.

Each sensor type has a speci c temperature measuring range that should be observed by the user. The controller includes one control outlet (Out- put1) and one timer outlet (Output2). The NTC Thermistor model is pro- vided with a NTC Thermistor and 2m long cable to get you up and running immediately. The timer output is typically used for the system defrost. The t1 and t2 parameters de ne, respectively, the interval and duration of the defrost cycles. IP65 enclosure frontal protection

Sensor Input:
• Output: 10 A control relay and 3 A alarm

relay

Resolution: 0,1 °C from -19,9 to 199,9 °C

Operating temperature: 0 to 40 °C

Power supply: 100~240 Vac/dc (± 10 %) or

optional 24 Vdc/ac (12~30 Vdc/ac)

RS-485 digital communication; RTU MODBUS

protocol (optional)

N323R Temperature Thermostats

This model of temperature controller controls the end of defrosting by temperature. It features three output relays: compressor, defrosting and fan. It operates with two sensors, one for room temperature and other to be attached to the evaporator for control of defrost end. Employed in cool- ing and defrosting. IP65 enclosure frontal protection

Features:
• Sensorinput:Thermistor(-50to120oC),Pt100

(-50 to 300 °C), Thermocouple J (0 to 600 °C).

OUTPUT1: Relay SPDT; 1 HP 250 Vac / 1/3 HP

125 Vac (10 A Resistive)

OUTPUT2: Relay: 3A / 250 Vac, SPST

OUTPUT3: Relay: 3A / 250 Vac, SPST Resolution: 0,1 °C from -19,9

to 199,9 °C

Operating temperature: 0 to 40 °C

Power supply: 100~240 Vac/dc (± 10 %) or 24 Vdc/ac (12~30 Vdc/

ac)

RS-485 digital communication; RTU MODBUS protocol (optional)

N323-RHT-485 Temperature & RH Controller w/RS-485, 24 VDC, 240 VAC

The N322RHT is a digital controller for relative humidity and temperature. Its 2 relay outputs can be con gured independently as control or alarm, either for temperature or relative humidity. RHT sensor probe with 3 me- tre cable included. Bright, 3.5 digit LED display

Relay outputs can drive fans, compressors, pumps, heaters etc. to control the temperature and humidity. The controller has
an RS-485 port and communicates via Modbus
RTU, allowing integration into building management

or logging systems.

Speci cations:
• Power: 12 to 30 VAC/DC
• Warm-up: 15 minutes
• Controller\'s Temperature resolution: 0.1o (–19.9o and 119.9o)
• Controller\'s RH resolution: 1%
• Adjustable hystereses and con gurable setpoint minimum and maxi-

mum limits
• IP65 when installed in a panel
• RS-485 Modbus communications

N322 Relative Humidity and Temperature Controller

The N322RHT is a digital controller for relative hu- midity and temperature. Its 2 relay outputs can be con gured independently as control or alarm, either for temperature or relative humidity. A Relative Hu- midity and Temperature or RHT probe (3 m length) is provided along with the instrument.

Features:
• Controller\'s Temperature: 0.1o for indications between –19.9o and

119,9o, 1o elsewhere
• Controller\'s RH Resolution: 1%
• Warm up: 15 minutes
• OUTPUT1: Relay SPDT; 1 HP 250 Vac / 1/3 HP 125 Vac (10 A Resis-

tive)
• OUTPUT2: Relay: 3A @250 Vac, SPST
• RS-485 digital communication; RTU MODBUS protocol (optional) • Power Supply:

- 100~240 Vac (± 10 %) or optional 24 Vdc/ac (12~30 Vdc/ac)

- Mains frequency: 50 ~ 60 Hz. Power consumption: 5 VA • PANEL CUT-OUT: 70 x 29 mm