羅美特（上海）自動化儀表股份有限公司

The MTTM Series Turbine flowmeter is a high precision flowmeter, which designed and developed by ourselves on the basis of absorbing the advantages of imported products. The product integrates the functions of machinery, termperature and pressure correction, remote transmission, recharge,valve control into one assembly. The product is mainly used in gas metering for industrial and commercial users.The product is exquisite and beautiful in appearance, whose performance is leading position in the industry, with a variety of specification.
The product’s mechanical performance is stable. Range ratio can reach 1:20.

Intergrated Mechanica counting, temperature and pressure correction, remote transmission, recharge, valve control into one assembly.

The battary life can last more than 3 years

and the memery can store data for 12 months ( a set of data per hour)

The meter head can rotate freely and easy to reading data.

Specification	Flow Range	Flange OD	Pressure Loss	Flange Distance	Length
Specification	m³/h	mm	kPa	mm	mm
MTTM-50A(Z)	5~65	DN50	0.6	150	411
MTTM-50B(Z)	8~100		0.9
MTTM-50C(Z)	10~160		2.0
MTTM-80A(Z)	8~160	DN80	0.7	240	439
MTTM-80B(Z)	13~250		1.2
MTTM-80C(Z)	20~400		2.2
MTTM-100A(Z)	13~250	DN100	0.7	300	468
MTTM-100B(Z)	20~400		1.0
MTTM-100C(Z)	32~650		2.3
MTTM-150A(Z)	32·650	DN150	0.7	450	528
MTTM-150B(Z)	50~1000		1.0
MTTM-150C(Z)	80~1600		2.3
MTTM-200A(Z)	50~1000	DN200	0.7	600	595
MTTM-200B(Z)	80~1600		0.9
MTTM-200C(Z)	130~2500		1.7
MTTM-250A(Z)	80~1600	DN250	0.6	750	660
MTTM-250B(Z)	130~2500		1.0
MTTM-250C(Z)	200~4000		2.0
MTTM-300A(Z)	130~2500	DN300	0.7	900	722
MTTM-300B(Z)	200~4000		1.0
MTTM-300C(Z)	320~6500		2.0
Remarks ： 1. Nominal pressur: PN1.6Mpa, Standard Pressure sensor 0.5Mpa, any special requirement from customer need to send new request when send orders.
2. All products is according to the requirement of grade 1.5, 1.0.
3. Smart roots flowmeter’s specification has the lettle “Z“and Mechanical flowmeter has no lettle"z"

通經 mm	PN MPa	A	B	H			D	K	d	n	L
				智能	機械	雙顯
DN25	1.6	200	164	318	228	387	115	85	14	4	14
	2.5
	4.0
DN50	1.6	200	214	344	252	404	165	125	99	4	18
	2.5
	4.0
DN80	1.6	240	241	374	276	418	200	160	132	8	18
	2.5
	4.0
DN100	1.6	300	262	393	361	493	220	180	156	8	18
	2.5		270	400	369	501	235	190	156	8	22
	4.0
DN150	1.6	450	313	457	426	556	285	240	211	8	22
	2.5		321	465	434	564	300	250	211	8	26
	4.0
DN200	1.6	600	368	501	470	600	340	295	266	12	22
	2.5		378	511	480	610	360	310	274	12	26
	4.0		386	519	488	618	375	320	284	12	30
DN250	1.6	750	438	572	541	671	405	355	319	12	26
	2.5		448	582	551	681	425	370	330	12	30
	4.0		460	594	563	693	450	385	345	12	33
DN300	1.6	900	482	627	706	839	460	410	370	12	26
	2.5		495	640	719	849	485	430	389	16	30
	4.0		515	655	734	864	515	450	409	16	33

1: Selection should be within the prescribed flow range to prevent over-speed operation, in order to obtain the desired accuracy and ensure normal service life. (Flowmeters can be damaged by over-speed operation due to pressure testing, purging of pipes or exhaust gas, and the operation of turbines in reverse flow)

2: In order to prevent the pipeline and flowmeter from being damaged by the instantaneous airflow impact, the flowmeter should open the front valve slowly when it is put into operation, and gradually increase the flow rate so as to avoid damaging the turbine by the instantaneous airflow impact. Then slowly open the valve and run for 1 to 2 minutes at a small flow rate. After the flowmeter is in normal operation, all the valves are opened (opening time is not less than 15S). The valve should be slowly closed after closing the valve. Do not shut down suddenly.
3: The number of times to add lubricating oil depends on the cleanliness of the temperament, usually once a month. The specific operation and lubricating oil can be seen in the oil cup label.
4: When the flowmeter is running, it is not allowed to open the back cover or change the internal parameters, otherwise it will affect the normal operation of the flowmeter.
5: If the output signal is 4mA-20mA current signal, in order to improve its accuracy, users should set the corresponding value of 20mA according to the actual maximum standard volume flow value.
6: do not loosen the fixed parts of the flowmeter at will.
7: After installation, air tightness test should be carried out on the pipeline to strictly check the air tightness of the pipeline. For auxiliary technical equipment equipped with pressure compensator, attention should be paid to the pressure range of the pressure testing equipment in order to avoid damaging the pressure measuring components.
8: strictly prohibit the flow meter on-line welding pipe flange.
9: there is no strong external magnetic field disturbance and strong mechanical vibration around the flowmeter.
10: When the flowmeter is installed outdoors, it is suggested to add protective cover to avoid the influence of rainwater immersion and sunshine on the service life of the flowmeter.
11: the flowmeter should be reliably grounded, but it must not be shared with the strong power system ground wire. When installing or overhauling the pipeline, the ground wire of the welding system shall not be overlapped with the flowmeter.
12: In the course of use, users shall not change the connection mode of explosion-proof system and the interface of each lead arbitrarily.
13: When installing, using and maintaining products, users must abide by the relevant provisions of Part 15 of the electrical equipment for explosive gas environment: electrical installation in dangerous places (except coal mines). When the product is used in the "0" zone, the power transformer supplying power to the safety grid shall comply with Article 8.1 of GB3836.4-2000.
14: The product must match with the safety grid identified by the explosion-proof inspection organ to form the intrinsic safety explosion-proof system. The shielded cable is used to connect the cable, and the shielding layer is grounded in the safe place. The distribution parameters of the cable are within 0.2uF/0.3mH.
15: installation and use requirements of intrinsically safe explosion-proof products
The intrinsic safety explosion-proof products equipped with SMARC volume corrector must comply with the following requirements in addition to the precautions for the use of the above-mentioned Article 6.
16: on-site installation and maintenance must turn off the external power before opening.
17: the product shell has earthing terminals, users should be reliably grounded when using products.
18: there should be no harmful gas to the aluminum alloy at the installation site.
19: Maintenance and battery replacement must be carried out in a safe place. Maintenance can only be carried out when the presence of non-combustible gases is confirmed at the installation site.
20: When using external power supply, it must be matched with the related equipment (safety grille) identified by the explosion-proof certification authority to form the intrinsic safety explosion-proof system before it can be used in the corresponding explosive dangerous places. The shielded cable is used to connect the cable, and the shielding layer is grounded in a safe place. The distribution parameters of the cable are controlled within 0.05uf/1mH.
21: Safety grate must be installed in safe place, and its installation, use and maintenance must comply with the relevant provisions of the safety grate instructions.
22: users are not allowed to change electrical components in their own products at will.
23: When installing, using and maintaining products, users must abide by the relevant provisions of GB50058-92 "Code for Design of Electric Power Devices in Explosive and Fire Hazardous Environment" and "Code for Electrical Safety in Explosive Hazardous Places of the People's Republic of China".
24: intrinsically safe hazardous areas below 1 zones for combustible gases of type II B class T4.