Technical parameters and usage instructions of the Thermal Engineering Handbook

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Those working in the field of industrial automation control need a portable instrument that can quickly detect and diagnose various faults during on-site maintenance and debugging. The \"Thermal Engineering Handbook\" is such an excellent instrument; it can calibrate or simulate pressure transmitters, differential pressure transmitters, vortex flow meters, thermocouples, and thermal resistors, as well as supply power to instruments on site and allow for quick access to complex thermal engineering manuals. I. Product Overview: The FY-3000 Thermal Instrument Manual uses a 16-bit microcontroller as its CPU, integrating the latest large-scale digital conversion integrated circuits and large-screen LCD display technology. It features output, measurement, manual display, and 24VDC power distribution functions, all of which can operate simultaneously. Equipped with a high-capacity rechargeable battery, it is easy to carry and constitutes an excellent solution for professionals in the thermal instrumentation industry for on-site maintenance and debugging tasks. II. Product Features The perfect combination of structure and functionality gives it the following features: 1. Compact, easy to carry and hold; 2. Durable and reliable, with a support frame and hook holes on the back for use in the field. 3. Large display screen: measurement, output, and thermal manual data can be displayed simultaneously. 4. It can measure voltage, current, frequency, thermocouples, platinum resistors, copper resistors, and ordinary resistors. 5. It can output signals such as voltage, current, millivolts, and frequency; the 24V DC power supply provides the circuit power for the transmitter. 6. The thermal engineering manual enables quick lookup of resistance values against temperature values, as well as millivolt values against temperature values; it also allows for quick retrieval of pressure and density values for saturated steam, as well as temperature and density values. 7. It has a backlight control function to facilitate use at night. III. Technical Specifications
Output Signal:
Current: 0–24 mA DC
Accuracy: ±0.05% FS
Resolution: 1 μA (for RL < 400 Ω; RL × IL ≤ 8 V)
Voltage: 0–6 V DC
Accuracy: ±0.05% FS
Resolution: 0.1 mV (for RL ≥ 10 KΩ)
Millivolts: 1–120 mV DC
Accuracy: ±0.05% FS
Resolution: 1 μV (for RL ≥ 20 KΩ)
Frequency: 0–5000 Hz, TTL-level rectangular wave
Resolution: 0.1 Hz
DC voltage: 24 V, IL < 30 mA
Accuracy: ±2%

Output Range and Accuracy:
1.9999–99.999 Hz: 0.02 Hz
100.00–999.99 Hz: 0.4 Hz
1000.0–1999.9 Hz: 3 Hz
2000.0–3000.0 Hz: 5 Hz
3000.0–5000.0 Hz: 15 Hz

Measured Signals:
Current: 0–35 mA DC
Accuracy: ±0.05% FS
Voltage: 0–5 V DC, accuracy: ±0.05% FS; 0–35 V DC, accuracy: ±0.1% FS
Millivolts: 1.10–100.00 mV DC, accuracy: ±0.05% FS
Resistance: 0.0–1200.0 Ω, accuracy: ±0.05% FS
Frequency: 0.0–5000.0 Hz (square wave), accuracy: ±0.2% Hz

Thermal manual (compliant with international ITS-90 standards) – enables cross-referencing between resistance values and temperature values. (Referring to PtlO and Ptl00 type thermoresistors.) Enable mutual lookup between millivolt values and temperature values: (referring to S, K, B, R, J, E, T, N type thermocouples). It enables querying for the pressure (P) of saturated steam, as well as querying for density using pressure (P) and temperature (T) to obtain density (p). Search range: Absolute pressure range: 0.1 MPa～16 MPa ； Temperature range: 100℃～350℃. Operating temperature: -10°C～50℃ ； Storage temperature: -20°C to 70°C. Dimensions: 237×131(95)×45 mm. Weight: 0.7 kg. Power supply: This instrument is equipped with a high-capacity rechargeable battery with a capacity of 10,800 mAh; it can also be charged using an external power source of 12V at 1.0A. Each charging session lasts 8 hours. A red light appears on the device’s panel during charging, while a green light turns on once charging is complete. The manual can still function normally while charging. It can operate normally for 8 to 16 hours after a single charge, with the duration depending on the usage conditions.