Infrared thermometry for sulfur reactors and other high temperature furnaces. Temperature range: 350 … 2000 °C.
LumaSense’s E²T PULSAR 4 Advanced is designed to measure two wavelengths for continuous and instantaneous measurement of Refractory Temperature (RT), Gas Temperature (GT) and Integrated Temperature (FF).
Addressing Complex Processes
Optimal operation of Sulfur Recovery Unit (SRU), Sulfur Burner, and Thermal Oxidizer furnaces require accurate process Gas (Flame) measurement and accurate Refractory measurement for operational safety (high temperature alarms).
Of particular importance is control of the furnace process temperatures to prevent damage to the furnace refractory and assurance that reaction or destruction temperatures are reached and maintained.
The Problem
Thermocouple measurement of acid processes either fail prematurely or are protected by multiple thermo wells and sweep air systems that make thermal transmission to the actual thermocouple inaccurate or slow and only provides a refractory measurement not useful for process control.
Typical Single Channel Infrared Pyrometers do not compensate for changing flame transparencies and only provide one wavelength measurement. Clients must settle for either a Gas (Flame) or Refractory measurement or make multiple installations requiring multiple ports and hardware installations.
- Single Channel Model programmable for Gas or Refractory Measurement
- Two Channel Advanced Model with simultaneous Measurement of Refractory and Gas Temperatures
- Separate channel outputs and alarm relay set points
- Instant or Average Readings
- Smart FMA™ Flame Measurement Algorithm (PULSAR 4 Advanced Only)
- Explosion-Proof Certification II 2G EX d IIB +H2 T4, IECEx, ATEX, FM (US and CDN) plus additional regional certifications
- Integrated power supply, capable of operating with 24VDC/120/230VAC
- RS485 Interface, HART protocol (PULSAR 4 Advanced only)
Technical Data
| PULSAR 4 and PULSAR 4 Advanced | |
| Temperature Range: | 350…2000 °C (662…3632 °F) |
| Measurement uncertainty:(E = 1, t90 = 1 s, Tamb. = 25 °C) | +0.3% of Reading or 3°C +1 Digit, whichever is greater |
| Response Time t90: | PULSAR 4: Programmable from 0.05 to 120 sec.PULSAR 4 Advanced: Programmable from 0.05 to 120 sec. When FMA mode is on 0.5 to 120 sec. |
| Analog outputs: | PULSAR 4: 2 identical analog outputs 4…20 mA, linear, Select one of RT, GT or FF Corresponding to NAMUR NE43PULSAR 4 Advanced: 2 analog outputs 4…20 mA, linear, Outputs can be assigned to RT, GT or FF Corresponding to NAMUR NE43 |
| Digital Interfaces: | RS485 addressable (half-duplex), Baud rate: 1.2…115.2 kBd, HART Rev. 7 interface |
| Load: | 0 … 600 Ω (mA output) |
| Relay Alarm: | 30 VDC / 1A max.; Resistive;Configuration of alarm: no alarm; alarm, if temperature > setpoint; alarm, if temperature < setpoint |
| Emissivity Adjustment: | 0.100 to 1.000 digital on both channels when in Standard mode |
| Transmittance Adjustment: | 0.100 to 1.000 digital on both channels when in Standard mode |
| Alpha Adjustment: | PULSAR 4: N/APULSAR 4 Advanced: 0.050 to 1.000 aLP when in FMA mode on GT channel (when in FMA mode) |
| Focusing Range: | 500 mm to infinity |
| Target Size: | 160:1 Standard Resolution, (distance / target size) |
| Power supply: | 24 V (18 … 30 VDC), 0.2 A maximum; 3.5 A with heater . 115 VAC ±10%, 47…63 Hz; 230 VAC ±10%, 47…63 Hz |
| Power consumption: | Max. 90 W (with heater) |
| Fusing: | (F1) 1.6A, ’T’ Time-Lag 5x20mm; (F2) 1.25A, ’T’ Time-Lag 5x20mm; (F3) 1A,’T’ Time-Lag 5x20mm |
| Ambient Temperature Limits: | -40 … +60°C with no cooling and using internal heater (ambient temperature <4°C)to +80°C with vortex air cooler (optional) with 7 bar sourceto +93°C with cooling base and 38 l/h water flow at 15°C(the water cooling method can accommodate higher ambient temperature by increasing flow rate; consult factory) |
| Hazardous Classification: | CE 1725 II 2G, EX d IIB +H2 T4 GbFM14ATEX0004X IECEx FME 14.0001XClass I, Div. 1, Groups B, C & D, T4Ta = -40 °C to 60 °C IP66NEMA “Type 4X” classification |
| Torque Spec, Lid Bolts: | 5.5 Nm |
| Air: | View port purge: 1.4 bar min., 1.7 m3 /h (@ standard conditions)Combustion purge: 1.4 bar min., 17 m3 /h (@ standard conditions) |
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