The Monitran MTN/1100 is an industrial constant current accelerometer (IEPE) with isolated AC output, standard sensitivity of 100 mV/g ±10% at 80 Hz, and a frequency response of 2 Hz to 10 kHz ±5% (−3 dB at 0.8 Hz). It is ATEX and IECEx Group II intrinsically safe (Ex ia IIC T4/T6 Ga) for use in gas environments; the 1100I, 1100IW, and 1100ISW variants also include Ex ia IIIC Da dust protection.
Stainless steel body with insulated base, IP67 (1100IW and 1100ISW: IP68, submersible up to 5 m). Five variants: top entry (1100I with 2-pin MS connector, 1100IW with polyurethane cable) and side entry (1100IS with 2-pin MS connector, 1100ISC with ETFE cable with stainless steel overbraid, 1100ISW with polyurethane cable). Guemisa is an official distributor of Monitran in Spain.
BAS02ATEX1057XIECEx BAS 08.0013X
Group II Ambient temperature −55 °C ≤ Ta ≤ +115 °C for T4 and −55 °C ≤ Ta ≤ +65 °C for T6 (1100IW and 1100ISW: T6 only, up to +65 °C)
Intrinsically safe for gas (zones 0, 1, and 2) and, in variants 1100I, 1100IW, and 1100ISW, for dust (zones 20, 21, and 22). Hover or click on each part of the marking to see what it means.
In what areas can the Monitran MTN/1100 be installed?
The 1100I, 1100IW, and 1100ISW are marked for gas Ex ia IIC (T4/T6 Ga; IW and ISW T6 only) and dust Ex ia IIIC Da, making them suitable for zones 0, 1, and 2 with gas and zones 20, 21, and 22 with dust. The 1100IS and 1100ISC are marked Ex II 1GD T135 °C Ex ia IIC T4 / T85 °C Ex ia IIC T6 and their blades do not include a dust line. Ambient temperature: −55 °C to +115 °C with T4 and −55 °C to +65 °C with T6 (IW and ISW: up to +65 °C). Certified BAS02ATEX1057X and IECEx BAS 08.0013X, Group II.
Do you need an intrinsically safe barrier?
Yes. The datasheets cite the MTL7728+ (BAS01ATEX7217) or the P&F Z728 (BAS01ATEX7005), or any other barrier conforming to note 5 of drawing ATX027 (1100I, 1100IS and 1100ISC) or drawing ATX028 (1100IW; 1100ISW: note 6). Sensor entity parameters: Ui = 28 V, Ii = 93 mA, Pi = 0.65 W; Ci and Li, as per certificate.
Is it suitable for mining?
No. The MTN/1100 ATEX is certified for Group II (surface industry), not for Group I (methane mines).
| Feature | Specification |
|---|---|
| Measure and signal | |
| Measured magnitude | Vibration acceleration |
| Exit | Isolated AC (mV), constant current accelerometer (IEPE) |
| Sensitivity | Standard 100 mV/g ±10% nominal at 80 Hz. Optional (xx): 10, 30, 50, 100 or 500 mV/g (1100I); 10, 25, 30 or 50 mV/g ±10% (1100IS, 1100ISC and 1100ISW); 10, 25, 30 or 500 mV/g (1100IW) |
| Frequency response | 2 Hz to 10 kHz ±5% (−3 dB at 0.8 Hz) |
| Resonance of the mounted base | 18 kHz (nominal) |
| Cross-sectional sensitivity | Less than 5% |
| Electrical noise | 0.1 mg max. |
| ATEX/IECEx Certification | |
| Cluster | II |
| Marking (gas) | Ex ia IIC T4 Ga and Ex ia IIC T6 Ga (1100I; 1100IS and 1100ISC: Ex II 1GD T135 °C Ex ia IIC T4 and Ex II 1GD T85 °C Ex ia IIC T6, without Ga); Ex ia IIC T6 Ga (1100IW and 1100ISW) |
| Marking (powder) | Ex ia IIIC T135 °C Da and Ex ia IIIC T85 °C Da (1100I); Ex ia IIIC T85 °C Da (1100IW and 1100ISW); the 1100IS and 1100ISC sheets do not indicate dust marking |
| Certificates | BAS02ATEX1057X and IECEx BAS 08.0013X |
| Ambient temperature | T4: −55 °C ≤ Ta ≤ +115 °C; T6: −55 °C ≤ Ta ≤ +65 °C (1100IW and 1100ISW: −55 °C ≤ Ta ≤ +65 °C) |
| Entity parameters | Ui = 28 V, Ii = 93 mA, Pi = 0.65 W; Ci and Li: see certificate |
| Barrier | 1 x MTL7728+ (BAS01ATEX7217) or P&F Z728 (BAS01ATEX7005), or any other barrier that meets note 5 of the ATX027 drawing (1100I, 1100IS and 1100ISC) or of the ATX028 drawing (1100IW; in the 1100ISW it is note 6 of ATX028) |
| Food and environment | |
| Power supply current | 0.5 to 8 mA (constant current) |
| Polarization voltage | 12 V DC (nominal) |
| Isolation | Isolated base |
| Insulation test | It passes a 500V insulation test |
| Protection | IP67; 1100IW and 1100ISW: IP68, submersible up to 5 m max. (0.5 bar) |
| Mechanics and connection | |
| Housing material | Stainless steel |
| Entrance | Top (1100I and 1100IW) or side (1100IS, 1100ISC and 1100ISW) |
| Mounting (top entry) | ¼" UNF female thread or Q/F female quick-release base |
| Mounting (side entry) | Bolt ¼"-28 UNF × 33 mm, M6 × 35 mm or M8 × 28 mm |
| Dimensions 1100I | 51.0 mm high, Ø22.0 mm, 25 mm hexagon between faces |
| Dimensions 1100IW | 67.0 mm high, Ø22.2 mm, 25 mm hexagon between faces |
| Tightening torque | 8 Nm |
| Weight | 100g (1100I), 140g (1100IS), 160g (1100ISC), 150g (1100IW), 200g (1100ISW), nominal |
| Connection 1100I and 1100IS | 2-pin MS connector (C5015, military style) |
| Connection 1100ISC | Integral ETFE cable with stainless steel overbraid |
| 1100IW and 1100ISW connection | Heavy-duty integral polyurethane cable with additional PTFE sheath (length to be specified in the order) |
| Maximum cable length | See ATX027 (1100I, 1100IS and 1100ISC) or ATX028 (1100IW and 1100ISW) system drawing |
| Reference | Configuration |
|---|---|
| MTN/1100I-xx MTN1100IXX | Variant: 1100I · Top Input · Connection: 2-pin MS connector (C5015, military style) · Mounting: ¼" UNF female · xx = optional sensitivity in mV/g: 10, 30, 50, 100 or 500 MTN/1100I technical data sheet (PDF) |
| MTN/1100IQ-xx MTN1100IQXX | Variant: 1100I · Top input · Connection: 2-pin MS connector (C5015, military style) · Mounting: Female Q/F quick-release base · xx = optional sensitivity in mV/g: 10, 30, 50, 100 or 500 MTN/1100I technical data sheet (PDF) |
| MTN/1100IS-xx MTN1100ISXX | Variant: 1100IS · Side Entry · Connection: 2-pin MS connector (C5015, military style) · Mounting: ¼"-28 UNF × 33 mm bolt · xx = optional sensitivity in mV/g (±10%): 10, 25, 30 or 50 MTN/1100IS technical sheet (PDF) |
| MTN/1100ISC-xx MTN1100ISCXX | Variant: 1100ISC · Side entry · Connection: Integral ETFE cable with stainless steel overbraid · Mounting: ¼"-28 UNF × 33 mm bolt · xx = optional sensitivity in mV/g (±10%): 10, 25, 30 or 50 MTN/1100ISC data sheet (PDF) |
| MTN/1100ISCM6-xx MTN1100ISCM6XX | Variant: 1100ISC · Side entry · Connection: Integral ETFE cable with stainless steel overbraid · Mounting: M6 × 35 mm bolt · xx = optional sensitivity in mV/g (±10%): 10, 25, 30 or 50 MTN/1100ISC data sheet (PDF) |
| MTN/1100ISCM8-xx MTN1100ISCM8XX | Variant: 1100ISC · Side entry · Connection: Integral ETFE cable with stainless steel overbraid · Mounting: M8 × 28 mm bolt · xx = optional sensitivity in mV/g (±10%): 10, 25, 30 or 50 MTN/1100ISC data sheet (PDF) |
| MTN/1100ISM6-xx MTN1100ISM6XX | Variant: 1100IS · Side entry · Connection: 2-pin MS connector (C5015, military style) · Mounting: M6 × 35 mm bolt · xx = optional sensitivity in mV/g (±10%): 10, 25, 30 or 50 MTN/1100IS technical sheet (PDF) |
| MTN/1100ISM8-xx MTN1100ISM8XX | Variant: 1100IS · Side entry · Connection: 2-pin MS connector (C5015, military style) · Mounting: M8 × 28 mm bolt · xx = optional sensitivity in mV/g (±10%): 10, 25, 30 or 50 MTN/1100IS technical sheet (PDF) |
| MTN/1100ISW-xx MTN1100ISWXX | Variant: 1100ISW · Side entry · Connection: Heavy-duty integral polyurethane cable, length to be specified on order, with additional PTFE sheath · Mounting: ¼"-28 UNF × 33 mm bolt · Submersible to 5 m (0.5 bar) · xx = optional sensitivity in mV/g (±10%): 10, 25, 30 or 50 MTN/1100ISW data sheet (PDF) |
| MTN/1100ISWM6-xx MTN1100ISWM6XX | Variant: 1100ISW · Side entry · Connection: Heavy-duty integral polyurethane cable, length to be specified on order, with additional PTFE sheath · Mounting: M6 × 35 mm bolt · Submersible to 5 m (0.5 bar) · xx = optional sensitivity in mV/g (±10%): 10, 25, 30 or 50 MTN/1100ISW data sheet (PDF) |
| MTN/1100ISWM8-xx MTN1100ISWM8XX | Variant: 1100ISW · Side entry · Connection: Heavy-duty integral polyurethane cable, length to be specified on order, with additional PTFE sheath · Mounting: M8 × 28 mm bolt · Submersible to 5 m (0.5 bar) · xx = optional sensitivity in mV/g (±10%): 10, 25, 30 or 50 MTN/1100ISW data sheet (PDF) |
| MTN/1100IW-xx MTN1100IWXX | Variant: 1100IW · Top entry · Connection: Heavy-duty integral polyurethane cable, length to be specified on order, with additional PTFE sheath · Mounting: ¼" UNF female · Submersible to 5 m (0.5 bar) · xx = optional sensitivity in mV/g: 10, 25, 30 or 500 MTN/1100IW data sheet (PDF) |
| MTN/1100IWQ-xx MTN1100IWQXX | Variant: 1100IW · Top entry · Connection: Heavy-duty integral polyurethane cable, length to be specified on order, with additional PTFE sheath · Mounting: Female Q/F quick-release base · Submersible to 5 m (0.5 bar) · xx = optional sensitivity in mV/g: 10, 25, 30 or 500 MTN/1100IW data sheet (PDF) |
The sheets cite 1 x MTL7728+ (BAS01ATEX7217) or P&F Z728 (BAS01ATEX7005), or any other barrier that complies with note 5 of drawing ATX027 (1100I, 1100IS and 1100ISC) or drawing ATX028 (1100IW); in 1100ISW they refer to note 6 of ATX028.
It should not be installed in an atmosphere laden with high-speed dust.
Warning from the datasheets regarding Group II: Ci and Li values were previously lower; the installer must take into account the increased internal capacitance and inductance of this appliance.
1100IW and 1100ISW: the cable has an additional PTFE sheath, with a surface resistivity greater than 1 GΩ·m, which poses a risk of electrostatic ignition.
Options cited by the sheets: MH002 (standard) and MH088 (stainless steel) coupling connectors in the connector variants, various cable lengths in the cable variants, and a «dustproof option (Group II only)» which the sheets do not detail further.
The 1100IS and 1100ISC datasheets do not indicate dust marking (only the Ex II 1GD gas lines), and none of the published variant datasheets indicate dynamic range.
Eaton Zener Barrier, MTL7700 Series
Cited in the Monitran technical data sheet. Barrier data: Eaton specification sheet.
