TG-F2289-E04

AM3000 Series MICRO FLOWMETER

TOKYO KEISO CO., LTD.

5

AM3000/E1 SERIES (LOCAL INDICATOR WITH CURRENT OUTPUT)

AM3000/H1 SERIES (LOCAL INDICATOR WITH CURRENT OUTPUT AND HART

R COMMUNICATION)

AM3000/E1 series indicates flow rates with a pointer and scale plate, and outputs electric signals (4–20 mA DC) proportional to the flow

rate.

AM3000/H1 series indicates flow rates with a pointer and scale plate, and outputs electric signals (4–20 mA DC) superimposed by digital

signals complying with the HART protocol (multidrop mode).

In addition to the dust-tight and immersion-proof types, intrinsically-safe and flameproof versions will be available in the near future (currently

under consideration).

● Transmitter specifications

Power supply voltage

: 10 to 30 V DC (between transmitter terminals) (intrinsically safe version: 10 to 28 V DC)

Current output

: 4–20 mA DC

Effective output range: 4.0 to 21.6 mA. In abnormal conditions, 22.8 mA or 3.75 mA (optional) is

output.

Allowable load resistance

: 830 Ω or less for AM3000/E1 series (580 Ω or less/24 V DC)

230 to 830 Ω for AM3000/H1 series (HART communication needs at least 230 Ω)

Determine the allowable load resistance for each supply voltage by using the formula:

Allowable load resistance ≤ (Power supply voltage [V] – 10) / 0.024 [Ω]

The allowable load resistance includes the resistance in the wiring.

Output accuracy

: ±1.0% F.S. (against the flow scale)

Temperature change effect

: 10 µA/℃

Low cut-off

: 0 to 20% F.S. (default: 7% F.S.)

Damping

: 0 to 20 s (default: 1 s)

Cable entry

: Dust-tight and immersion-proof, intrinsically-safe: M20 × 1.5, G1/2, NPT1/2, waterproof connector

Flameproof: M20 × 1.5, NPT1/2, flameproof cable gland

Note: For the TIIS flameproof construction, use the EXPC-16B flameproof cable gland (Shimada

Electric Co.). The cable diameter is 6 mm to 12 mm (standard: 10 mm to 12 mm).

Construction

: Dust-tight and immersion-proof

IP67

Intrinsically safe

Ex ia ⅡC T3/T4 (Temperature class of TIIS-certified models is T4,

that of NEPSI-certified models is T1 ... T6)

Flameproof

Ex db ⅡC T3 ... T6 (Temperature class of TIIS-certified models is T4)

Ambient temperature

: Dust-tight and immersion-proof

–20 to +70℃

Intrinsically safe

–20 to +60℃

Flameproof

–20 to +55℃ (TIIS-certified products)

–20 to +60℃ (other certified products)

Insulation resistance

: 20 MΩ or more/500 V DC (between the batch of power supply terminals and the case)

Withstand voltage

: 500 V AC/1 min (between the batch of power supply terminals and the case)