
- 10 -
8. Troubleshooting
• Error: Display shows“ ER1” + backlight is red + 3 beeps sound
Meaning: The room temperature has dropped below 10 ˚C/ 50 ˚F or exceeded 40
˚C/ 104˚ ˚F. Desired action: Store the thermometer at room temperature.
• Error: Display shows“ ERC” + backlight is red + 3 beeps sound
Meaning: EEPROM data reading error or the correcting process is not nished.
Desired action: Contact your supplier.
• Error: Display shows low-voltage signal (not blinking) Meaning: The battery
voltage is below 2.61V±2%. Desired action: Replace the batteries according to the
instructions.
• “L ˚”: Measurement is below 0 ˚C or 32 ˚ F. Desired action: Check that you are
following the instructions for taking accurate measurements.
• “H ˚“: Measurement exceeds 99,9 ˚C or 212 ˚F. Desired action: Make sure you are
following the instructions for taking accurate measurements.
9. Technical Information
• Model: Dual Mode Thermometer DMT-316
• Applicable regulations and laws: ASTM 1965/EN12470BS EN ISO 80601-2-56:2012
• Temperature units: ˚C/ ˚F, adjustable
• Measurement range 0.0 ˚C-100.0 ˚C / 32.0 ˚F-212.0 Precision: ±0.2 ˚C /±0.4 ˚F
• Display resolution: 0.1 ˚C/0.1 ˚F
• Latency Time: 1 second
• Sound: Volume 50 dB (Distance from dB Volume sensor to thermometer is 10cm)
• Automatic shutdown function: ±10s
• Low-voltage display function: low-voltage sign shows when the voltage is below
2.51V±0.15V
• Memory function: capacity of 20 data sets
• Current consumption: I stand-by<2μA; I Buzzer on<2mA;
I working<0.5mA; I backlight<15mA
• LED backlight specications: 1.2cd/m2
• Operational conditions: ASTM 10 ˚C-40 ˚C (50 ˚F-104 ˚F)/15-95%RH
• Operational atmospheric pressure range: 860hPa to 1060hPa
• Battery: Two 1.5V AAA type batteries
• Battery life: 3000 measurements
• Accuracy (for clinical test): maximum allowable error for clinical test = Terror = T1-
Tref+ T2-Tref 2 0.3 ˚C/0.6 ˚F (for 95%) (T1 and T2 represent temperature value for
thermometer under test; Tref represents the constant reference temperature.)
• ASTM laboratory accuracy requirements in the display range of 37 to 39˚C
(98 to 102˚F) for IR thermometers is +/- 0.2˚C (+/- 0.4˚F), whereas for mercury-
in-glass and electronic thermometers, the requirement per ASTM Standards
E667-86 and E1112-86 is +/- 0.1˚C (+/- 0.2˚F).